Benzyl sulfonamide derivatives as rorc modulators

ABSTRACT

Compounds of the formula I: 
     
       
         
         
             
             
         
       
     
     or pharmaceutically acceptable salts thereof,
 
wherein m, A, B, C, R 1 , R 2 , R 3 , R 4  and R 5  are as defined herein. Also disclosed are methods of making the compounds and using the compounds for treatment of inflammatory diseases such as arthritis.

CROSS REFERENCE TO RELATED APPLICATION

This application claims the benefit under 35 USC §119 of U.S. Provisional Application Ser. No. 61/579,255 filed on Dec. 22, 2011, the disclosure of which is incorporated herein by reference.

FIELD OF THE INVENTION

The invention pertains to compounds that modulate the function of retinoid-receptor related orphan receptor RORc (RORγ) and use of such compounds for treatment of autoimmune diseases.

BACKGROUND OF THE INVENTION

T helper 17 cells (Th17) are interleukin (IL)-17 secreting CD4+ T cells involved in pathogenesis of autoimmune diseases such as rheumatoid arthritis, irritable bowel disease, psoriasis, psoriatic arthritis and spondyloarthridities. The retinoic acid-related orphan receptor γ (RORγ or RORc) is recognized as a transcription factor necessary for Th17 cell differentiation. RORc is an orphan member of the nuclear hormone receptor subfamily that includes RORα (RORa) and RORβ (RORb). RORc controls gene transcription by binding to DNA as a monomer. Selective modulation of RORc has been proposed as a route to discovery and development of Th17 cell-associated autoimmune diseases.

There is accordingly a need for compounds that inhibit RORc for use in treatment of autoimmune diseases such as rheumatoid arthritis, irritable bowel disease, psoriasis, psoriatic arthritis and spondyloarthridities.

SUMMARY OF THE INVENTION

The invention provides compounds of the formula I:

or pharmaceutically acceptable salts thereof, wherein:

A is a group of formula: (a); (b); (c); or (d):

B is a group of formula: (e); (f); (g) or (h):

C is a group of formula: (i); (j); (k); or (m):

-   -   m is 0 or 1;     -   n is from 0 to 3;     -   p is from 0 to 2;     -   q is from 0 to 3;     -   r is from 0 to 3;     -   s is from 0 to 2;     -   t is 0 or 1;     -   u is from 0 to 3;

R¹ is: hydrogen; or C₁₋₆alkyl;

R² is: hydrogen; or C₁₋₆alkyl;

R³ is: C₁₋₆alkyl; C₃₋₆cycloalkyl; C₃₋₆cycloalkyl-C₁₋₆alkyl; heterocyclyl; heterocyclyl-C₁₋₆alkyl; phenyl-C₁₋₆alkyl; or C₁₋₆alkylsulfonyl, wherein the C₁₋₆alkyl, C₃₋₆cycloalkyl C₃₋₆cycloalkyl-C₁₋₆alkyl and phenyl-C₁₋₆alkyl each may be optionally substituted one or more time with halo;

R⁴ is: hydrogen; or C₁₋₆alkyl;

R⁵ is: hydrogen; or C₁₋₆alkyl;

R⁶ is: cyano; —(CH₂)_(v)—NR^(a)R^(b); —(CH₂)_(v)—S(O)_(w)—R^(c); —(CH₂)_(v)—C(O)—NR^(a)R^(b); —(CH₂)_(v)—S(O)_(w)—NR^(a)R^(b); —(CH₂)_(v)—NR^(d)—C(O)—R^(c); —(CH₂)_(v)—NR^(d)—C(O)—NR^(a)R^(b); or —(CH₂)_(v)—NR^(d)—S(O)_(w)—R^(c), wherein:

-   -   v is 0 or 1,     -   w is from 0 to 2;     -   R^(a) and R^(b) each independently is: hydrogen; or C₁₋₆alkyl;     -   R^(c) is: C₁₋₆alkyl; C₃₋₆cycloalkyl; or         C₃₋₆cycloalkyl-C₁₋₆alkyl; and     -   R^(d) is: hydrogen; or C₁₋₆alkyl;

each R⁷ is independently: C₁₋₆alkyl; halo; C₁₋₆alkoxy; cyano; halo-C₁₋₆alkyl; hydroxy-C₁₋₆alkyl; halo-C₁₋₆alkoxy; or C₁₋₆alkylsulfonyl;

R⁸ is: C₁₋₆alkyl; C₃₋₆cycloalkyl; or C₃₋₆cycloalkyl-C₁₋₆alkyl;

R⁹ is: hydrogen; or C₁₋₆alkyl;

R¹⁰ is: hydrogen; or C₁₋₆alkyl;

R¹¹ is: hydrogen; hydroxy; cyano; —(CH₂)_(n)—NR^(a)R^(b); —(CH₂)_(n)—S(O)_(v)—R^(c); —(CH₂)_(n)—C(O)—NR^(a)R^(b); —(CH₂)_(n)—S(O)_(v)—NR^(a)R^(b); —(CH₂)_(n)—NR^(d)—C(O)—R^(c); —(CH₂)_(v)—NR^(d)—C(O)—NR^(a)R^(b); or —(CH₂)_(n)—NR^(d)—S(O)_(v)—R^(c).

each R¹² is independently: C₁₋₆alkyl; halo; C₁₋₆alkoxy; cyano; halo-C₁₋₆alkyl; halo-C₁₋₆alkoxy; or C₁₋₆alkylsulfonyl;

each R¹³ is independently: C₁₋₆alkyl; halo; C₁₋₆alkoxy; cyano; halo-C₁₋₆alkyl; halo-C₁₋₆alkoxy; or C₁₋₆alkylsulfonyl;

each R¹⁴ is independently: C₁₋₆alkyl; halo; C₁₋₆alkoxy; cyano; halo-C₁₋₆alkyl; halo-C₁₋₆alkoxy; or C₁₋₆alkylsulfonyl;

R¹⁵ is: C₁₋₆alkyl; C₃₋₆cycloalkyl; or C₃₋₆cycloalkyl-C₁₋₆alkyl;

R¹⁶ is: hydrogen; or C₁₋₆alkyl;

R¹⁷ is: hydrogen; or C₁₋₆alkyl;

each R¹⁸ is independently: C₁₋₆alkyl; halo; C₁₋₆alkoxy; cyano; halo-C₁₋₆alkyl; halo-C₁₋₆alkoxy; or C₁₋₆alkylsulfonyl; and

R¹⁹ is C₁₋₆alkyl;

provided that the compound is not N-isobutyl-N-[5-(3-methanesulfonyl-phenyl)-thiophen-2-ylmethyl]-C-phenyl-methanesulfonamide.

The invention also provides and pharmaceutical compositions comprising the compounds, methods of using the compounds, and methods of preparing the compounds.

DETAILED DESCRIPTION OF THE INVENTION Definitions

Unless otherwise stated, the following terms used in this Application, including the specification and claims, have the definitions given below. It must be noted that, as used in the specification and the appended claims, the singular forms “a”, “an,” and “the” include plural referents unless the context clearly dictates otherwise.

“Alkyl” means the monovalent linear or branched saturated hydrocarbon moiety, consisting solely of carbon and hydrogen atoms, having from one to twelve carbon atoms. “Lower alkyl” refers to an alkyl group of one to six carbon atoms, i.e. C₁-C₆alkyl. Examples of alkyl groups include, but are not limited to, methyl, ethyl, propyl, isopropyl, isobutyl, sec-butyl, tert-butyl, pentyl, n-hexyl, octyl, dodecyl, and the like.

“Alkenyl” means a linear monovalent hydrocarbon radical of two to six carbon atoms or a branched monovalent hydrocarbon radical of three to six carbon atoms, containing at least one double bond, e.g., ethenyl, propenyl, and the like.

“Alkynyl” means a linear monovalent hydrocarbon radical of two to six carbon atoms or a branched monovalent hydrocarbon radical of three to six carbon atoms, containing at least one triple bond, e.g., ethynyl, propynyl, and the like.

“Alkylene” means a linear saturated divalent hydrocarbon radical of one to six carbon atoms or a branched saturated divalent hydrocarbon radical of three to six carbon atoms, e.g., methylene, ethylene, 2,2-dimethylethylene, propylene, 2-methylpropylene, butylene, pentylene, and the like.

“Alkoxy” and “alkyloxy”, which may be used interchangeably, mean a moiety of the formula —OR, wherein R is an alkyl moiety as defined herein. Examples of alkoxy moieties include, but are not limited to, methoxy, ethoxy, isopropoxy, and the like.

“Alkoxyalkyl” means a moiety of the formula R^(a)—O—R^(b)—, where R^(a) is alkyl and R^(b) is alkylene as defined herein. Exemplary alkoxyalkyl groups include, by way of example, 2-methoxyethyl, 3-methoxypropyl, 1-methyl-2-methoxyethyl, 1-(2-methoxyethyl)-3-methoxypropyl, and 1-(2-methoxyethyl)-3-methoxypropyl.

“Alkoxyalkoxy” means a group of the formula —O—R—R′ wherein R is alkylene and R′ is alkoxy as defined herein.

“Alkylcarbonyl” means a moiety of the formula —C(O)—R, wherein R is alkyl as defined herein.

“Alkoxycarbonyl” means a group of the formula —C(O)—R wherein R is alkoxy as defined herein.

“Alkylcarbonylalkyl” means a group of the formula —R—C(O)—R wherein R is alkylene and R′ is alkyl as defined herein.

“Alkoxycarbonylalkyl” means a group of the formula —R—C(O)—R wherein R is alkylene and R′ is alkoxy as defined herein.

“Alkoxycarbonylalkoxy” means a group of the formula —O—R—C(O)—R′ wherein R is alkylene and R′ is alkoxy as defined herein.

“Hydroxycarbonylalkoxy” means a group of the formula —O—R—C(O)—OH wherein R is alkylene as defined herein.

“Alkylaminocarbonylalkoxy” means a group of the formula —O—R—C(O)—NHR′ wherein R is alkylene and R′ is alkyl as defined herein.

“Dialkylaminocarbonylalkoxy” means a group of the formula —O—R—C(O)—NR′R″ wherein R is alkylene and R′ and R″ are alkyl as defined herein.

“Alkylaminoalkoxy” means a group of the formula —O—R—NHR′ wherein R is alkylene and R′ is alkyl as defined herein.

“Dialkylaminoalkoxy” means a group of the formula —O—R—NR′R′ wherein R is alkylene and R′ and R″ are alkyl as defined herein.

“Alkylsulfonyl” means a moiety of the formula —SO₂—R, wherein R is alkyl as defined herein.

“Alkylsulfonylalkyl means a moiety of the formula —R′—SO₂—R″ where R′ is alkylene and R″ is alkyl as defined herein.

“Alkylsulfonylalkoxy” means a group of the formula —O—R—SO₂—R′ wherein R is alkylene and R′ is alkyl as defined herein.

“Amino means a moiety of the formula —NRR′ wherein R and R′ each independently is hydrogen or alkyl as defined herein. “Amino thus includes “alkylamino (where one of R and R′ is alkyl and the other is hydrogen) and “dialkylamino (where R and R′ are both alkyl.

“Aminocarbonyl” means a group of the formula —C(O)—R wherein R is amino as defined herein.

Alkoxyamino” means a moiety of the formula —NR—OR′ wherein R is hydrogen or alkyl and R′ is alkyl as defined herein.

“Alkylsulfanyl” means a moiety of the formula —SR wherein R is alkyl as defined herein.

“Aminoalkyl” means a group —R—R′ wherein R′ is amino and R is alkylene as defined herein. “Aminoalkyl” includes aminomethyl, aminoethyl, 1-aminopropyl, 2-aminopropyl, and the like. The amino moiety of “aminoalkyl” may be substituted once or twice with alkyl to provide “alkylaminoalkyl” and “dialkylaminoalkyl” respectively. “Alkylaminoalkyl” includes methylaminomethyl, methylaminoethyl, methylaminopropyl, ethylaminoethyl and the like. “Dialkylaminoalkyl” includes dimethylaminomethyl, dimethylaminoethyl, dimethylaminopropyl, N-methyl-N-ethylaminoethyl, and the like.

“Aminoalkoxy” means a group —OR—R′ wherein R′ is amino and R is alkylene as defined herein.

“Alkylsulfonylamido” means a moiety of the formula —NR′SO₂—R wherein R is alkyl and R′ is hydrogen or alkyl.

“Aminocarbonyloxyalkyl” or “carbamylalkyl” means a group of the formula —R—O—C(O)—NR′R″ wherein R is alkylene and R′, R″ each independently is hydrogen or alkyl as defined herein.

“Alkynylalkoxy” means a group of the formula —O—R—R′ wherein R is alkylene and R′ is alkynyl as defined herein.

“Aryl” means a monovalent cyclic aromatic hydrocarbon moiety consisting of a mono-, bi- or tricyclic aromatic ring. The aryl group can be optionally substituted as defined herein. Examples of aryl moieties include, but are not limited to, phenyl, naphthyl, phenanthryl, fluorenyl, indenyl, pentalenyl, azulenyl, oxydiphenyl, biphenyl, methylenediphenyl, aminodiphenyl, diphenylsulfidyl, diphenylsulfonyl, diphenylisopropylidenyl, benzodioxanyl, benzofuranyl, benzodioxylyl, benzopyranyl, benzoxazinyl, benzoxazinonyl, benzopiperadinyl, benzopiperazinyl, benzopyrrolidinyl, benzomorpholinyl, methylenedioxyphenyl, ethylenedioxyphenyl, and the like, of which may be optionally substituted as defined herein.

“Arylalkyl” and “Aralkyl”, which may be used interchangeably, mean a radical-R^(a)R^(b) where R^(a) is an alkylene group and R^(b) is an aryl group as defined herein; e.g., phenylalkyls such as benzyl, phenylethyl, 3-(3-chlorophenyl)-2-methylpentyl, and the like are examples of arylalkyl.

“Arylsulfonyl means a group of the formula —SO₂—R wherein R is aryl as defined herein.

“Aryloxy” means a group of the formula —O—R wherein R is aryl as defined herein.

“Aralkyloxy” means a group of the formula —O—R—R″ wherein R is alkylene and R′ is aryl as defined herein.

“Carboxy” or “hydroxycarbonyl”, which may be used interchangeably, means a group of the formula —C(O)—OH.

“Cyanoalkyl” means a moiety of the formula —R′—R″, where R′ is alkylene as defined herein and R″ is cyano or nitrile.

“Cycloalkyl” means a monovalent saturated carbocyclic moiety consisting of mono- or bicyclic rings. Particular cycloalkyl are unsubstituted or substituted with alkyl. Cycloalkyl can optionally be substituted as defined herein. Unless defined otherwise, cycloalkyl may be optionally substituted with one or more substituents, wherein each substituent is independently hydroxy, alkyl, alkoxy, halo, haloalkyl, amino, monoalkylamino, or dialkylamino. Examples of cycloalkyl moieties include, but are not limited to, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, and the like, including partially unsaturated (cycloalkenyl) derivatives thereof.

“Cycloalkylalkyl” means a moiety of the formula —R′—R″, where R′ is alkylene and R″ is cycloalkyl as defined herein.

“Cycloalkylalkoxy” means a group of the formula —O—R—R′ wherein R is alkylene and R′ is cycloalkyl as defined herein.

“Heteroaryl” means a monocyclic or bicyclic radical of 5 to 12 ring atoms having at least one aromatic ring containing one, two, or three ring heteroatoms selected from N, O, or S, the remaining ring atoms being C, with the understanding that the attachment point of the heteroaryl radical will be on an aromatic ring. The heteroaryl ring may be optionally substituted as defined herein. Examples of heteroaryl moieties include, but are not limited to, optionally substituted imidazolyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, oxadiazolyl, thiadiazolyl, pyrazinyl, thienyl, benzothienyl, thiophenyl, furanyl, pyranyl, pyridyl, pyrrolyl, pyrazolyl, pyrimidyl, quinolinyl, isoquinolinyl, benzofuryl, benzothiophenyl, benzothiopyranyl, benzimidazolyl, benzooxazolyl, benzooxadiazolyl, benzothiazolyl, benzothiadiazolyl, benzopyranyl, indolyl, isoindolyl, triazolyl, triazinyl, quinoxalinyl, purinyl, quinazolinyl, quinolizinyl, naphthyridinyl, pteridinyl, carbazolyl, azepinyl, diazepinyl, acridinyl and the like, each of which may be optionally substituted as defined herein.

Heteroarylalkyl” or “heteroaralkyl” means a group of the formula —R—R′ wherein R is alkylene and R′ is heteroaryl as defined herein.

“Heteroarylsulfonyl means a group of the formula —SO₂—R wherein R is heteroaryl as defined herein.

“Heteroaryloxy” means a group of the formula —O—R wherein R is heteroaryl as defined herein.

“Heteroaralkyloxy” means a group of the formula —O—R—R″ wherein R is alkylene and R′ is heteroaryl as defined herein.

The terms “halo”, “halogen” and “halide”, which may be used interchangeably, refer to a substituent fluoro, chloro, bromo, or iodo.

“Haloalkyl” means alkyl as defined herein in which one or more hydrogen has been replaced with same or different halogen. Exemplary haloalkyls include —CH₂Cl, —CH₂CF₃, —CH₂CCl₃, perfluoroalkyl (e.g., —CF₃), and the like.

“Haloalkoxy” means a moiety of the formula —OR, wherein R is a haloalkyl moiety as defined herein. An exemplary haloalkoxy is difluoromethoxy.

“Heterocycloamino” means a saturated ring wherein at least one ring atom is N, NH or N-alkyl and the remaining ring atoms form an alkylene group.

“Heterocyclyl” means a monovalent saturated moiety, consisting of one to three rings, incorporating one, two, or three or four heteroatoms (chosen from nitrogen, oxygen or sulfur). The heterocyclyl ring may be optionally substituted as defined herein. Examples of heterocyclyl moieties include, but are not limited to, optionally substituted piperidinyl, piperazinyl, morpholinyl, thiomorpholinyl, azepinyl, pyrrolidinyl, azetidinyl, tetrahydropyranyl, tetrahydrofuranyl, oxetanyl and the like. Such heterocyclyl may be optionally substituted as defined herein.

“Heterocyclylalkyl” means a moiety of the formula —R—R′ wherein R is alkylene and R′ is heterocyclyl as defined herein.

“Heterocyclyloxy” means a moiety of the formula —OR wherein R is heterocyclyl as defined herein.

“Heterocyclylalkoxy” means a moiety of the formula —OR—R′ wherein R is alkylene and R′ is heterocyclyl as defined herein.

“Hydroxyalkoxy” means a moiety of the formula —OR wherein R is hydroxyalkyl as defined herein.

“Hydroxyalkylamino” means a moiety of the formula —NR—R′ wherein R is hydrogen or alkyl and R′ is hydroxyalkyl as defined herein.

“Hydroxyalkylaminoalkyl” means a moiety of the formula —R—NR′—R″ wherein R is alkylene, R′ is hydrogen or alkyl, and R″ is hydroxyalkyl as defined herein.

“Hydroxycarbonylalkyl” or “carboxyalkyl” means a group of the formula —R—(CO)—OH where R is alkylene as defined herein.

“Hydroxycarbonylalkoxy” means a group of the formula —O—R—C(O)—OH wherein R is alkylene as defined herein.

“Hydroxyalkyloxycarbonylalkyl” or “hydroxyalkoxycarbonylalkyl” means a group of the formula —R—C(O)—O—R—OH wherein each R is alkylene and may be the same or different.

“Hydroxyalkyl” means an alkyl moiety as defined herein, substituted with one or more, for example, one, two or three hydroxy groups, provided that the same carbon atom does not carry more than one hydroxy group. Representative examples include, but are not limited to, hydroxymethyl, 2-hydroxyethyl, 2-hydroxypropyl, 3-hydroxypropyl, 1-(hydroxymethyl)-2-methylpropyl, 2-hydroxybutyl, 3-hydroxybutyl, 4-hydroxybutyl, 2,3-dihydroxypropyl, 2-hydroxy-1-hydroxymethylethyl, 2,3-dihydroxybutyl, 3,4-dihydroxybutyl and 2-(hydroxymethyl)-3-hydroxypropyl

“Hydroxycycloalkyl” means a cycloalkyl moiety as defined herein wherein one, two or three hydrogen atoms in the cycloalkyl radical have been replaced with a hydroxy substituent. Representative examples include, but are not limited to, 2-, 3-, or 4-hydroxycyclohexyl, and the like.

“Oxo” means a group of the formula ═O (i.e., an oxygen with a double bond). Thus, for example, a 1-oxo-ethyl group is an acetyl group.

“Alkoxy hydroxyalkyl” and “hydroxy alkoxyalkyl”, which may be used interchangeably, means an alkyl as defined herein that is substituted at least once with hydroxy and at least once with alkoxy. “Alkoxy hydroxyalkyl” and “hydroxy alkoxyalkyl” thus encompass, for example, 2-hydroxy-3-methoxy-propan-1-yl and the like.

“Urea” or “ureido” means a group of the formula —NR′—C(O)—NR″R′″ wherein R′, R″ and R′″ each independently is hydrogen or alkyl.

“Carbamate” means a group of the formula —O—C(O)—NR′R″ wherein R′ and R″ each independently is hydrogen or alkyl.

“Carboxy” means a group of the formula —O—C(O)—OH.

“Sulfonamido” means a group of the formula —SO₂—NR′R″ wherein R′, R″ and R′″ each independently is hydrogen or alkyl.

“Optionally substituted” when used in association with an “aryl”, phenyl”, “heteroaryl” “cycloalkyl” or “heterocyclyl” moiety means that such moiety may be unsubstituted (i.e., all open valencies are occupied by a hydrogen atom) or substituted with specific groups as related herein.

“Leaving group” means the group with the meaning conventionally associated with it in synthetic organic chemistry, i.e., an atom or group displaceable under substitution reaction conditions. Examples of leaving groups include, but are not limited to, halogen, alkane- or arylenesulfonyloxy, such as methanesulfonyloxy, ethanesulfonyloxy, thiomethyl, benzenesulfonyloxy, tosyloxy, and thienyloxy, dihalophosphinoyloxy, optionally substituted benzyloxy, isopropyloxy, acyloxy, and the like.

“Modulator” means a molecule that interacts with a target. The interactions include, but are not limited to, agonist, antagonist, and the like, as defined herein.

“Optional” or “optionally” means that the subsequently described event or circumstance may but need not occur, and that the description includes instances where the event or circumstance occurs and instances in which it does not.

“Disease” and “Disease state” means any disease, condition, symptom, disorder or indication.

“Inert organic solvent” or “inert solvent” means the solvent is inert under the conditions of the reaction being described in conjunction therewith, including for example, benzene, toluene, acetonitrile, tetrahydrofuran, N,N-dimethylformamide, chloroform, methylene chloride or dichloromethane, dichloroethane, diethyl ether, ethyl acetate, acetone, methyl ethyl ketone, methanol, ethanol, propanol, isopropanol, tert-butanol, dioxane, pyridine, and the like. Unless specified to the contrary, the solvents used in the reactions of the present invention are inert solvents.

“Pharmaceutically acceptable” means that which is useful in preparing a pharmaceutical composition that is generally safe, non-toxic, and neither biologically nor otherwise undesirable and includes that which is acceptable for veterinary as well as human pharmaceutical use.

“Pharmaceutically acceptable salts” of a compound means salts that are pharmaceutically acceptable, as defined herein, and that possess the desired pharmacological activity of the parent compound.

It should be understood that all references to pharmaceutically acceptable salts include solvent addition forms (solvates) or crystal forms (polymorphs) as defined herein, of the same acid addition salt.

“Protective group” or “protecting group” means the group which selectively blocks one reactive site in a multifunctional compound such that a chemical reaction can be carried out selectively at another unprotected reactive site in the meaning conventionally associated with it in synthetic chemistry. Certain processes of this invention rely upon the protective groups to block reactive nitrogen and/or oxygen atoms present in the reactants. For example, the terms “amino-protecting group” and “nitrogen protecting group” are used interchangeably herein and refer to those organic groups intended to protect the nitrogen atom against undesirable reactions during synthetic procedures. Exemplary nitrogen protecting groups include, but are not limited to, trifluoroacetyl, acetamido, benzyl (Bn), benzyloxycarbonyl (carbobenzyloxy, CBZ), p-methoxybenzyloxycarbonyl, p-nitrobenzyloxycarbonyl, tert-butoxycarbonyl (BOC), and the like. The artisan in the art will know how to chose a group for the ease of removal and for the ability to withstand the following reactions.

“Solvates” means solvent additions forms that contain either stoichiometric or non stoichiometric amounts of solvent. Some compounds have a tendency to trap a fixed molar ratio of solvent molecules in the crystalline solid state, thus forming a solvate. If the solvent is water the solvate formed is a hydrate, when the solvent is alcohol, the solvate formed is an alcoholate. Hydrates are formed by the combination of one or more molecules of water with one of the substances in which the water retains its molecular state as H₂O, such combination being able to form one or more hydrate.

“Arthritis” means a disease or condition that causes damage to joints of the body and pain associated with such joint damage. Arthritis includes rheumatoid arthritis, osteoarthritis, psoriatic arthritis, septic arthritis, spondyloarthropathies, gouty arthritis, systemic lupus erythematosus and juvenile arthritis, osteoarthritis, and other arthritic conditions.

“Respiratory disorder” refers to, without limitation, chronic obstructive pulmonary disease (COPD), asthma, bronchospasm, and the like.

“Gastrointestinal disorder” (“GI disorder”) refers to, without limitation, Irritable Bowel Syndrome (IBS), Inflammatory Bowel Disease (IBD), biliary colic and other biliary disorders, renal colic, diarrhea-dominant IBS, pain associated with GI distension, and the like.

“Pain” includes, without limitation, inflammatory pain; surgical pain; visceral pain; dental pain; premenstrual pain; central pain; pain due to burns; migraine or cluster headaches; nerve injury; neuritis; neuralgias; poisoning; ischemic injury; interstitial cystitis; cancer pain; viral, parasitic or bacterial infection; post-traumatic injury; or pain associated with irritable bowel syndrome.

“Subject” means mammals and non-mammals. Mammals means any member of the mammalia class including, but not limited to, humans; non-human primates such as chimpanzees and other apes and monkey species; farm animals such as cattle, horses, sheep, goats, and swine; domestic animals such as rabbits, dogs, and cats; laboratory animals including rodents, such as rats, mice, and guinea pigs; and the like. Examples of non-mammals include, but are not limited to, birds, and the like. The term “subject” does not denote a particular age or sex.

“Therapeutically effective amount” means an amount of a compound that, when administered to a subject for treating a disease state, is sufficient to effect such treatment for the disease state. The “therapeutically effective amount” will vary depending on the compound, disease state being treated, the severity or the disease treated, the age and relative health of the subject, the route and form of administration, the judgment of the attending medical or veterinary practitioner, and other factors.

The terms “those defined above” and “those defined herein” when referring to a variable incorporates by reference the broad definition of the variable as well as particular definitions, if any.

“Treating” or “treatment” of a disease state includes, inter alia, inhibiting the disease state, i.e., arresting the development of the disease state or its clinical symptoms, and/or relieving the disease state, i.e., causing temporary or permanent regression of the disease state or its clinical symptoms.

The terms “treating”, “contacting” and “reacting” when referring to a chemical reaction means adding or mixing two or more reagents under appropriate conditions to produce the indicated and/or the desired product. It should be appreciated that the reaction which produces the indicated and/or the desired product may not necessarily result directly from the combination of two reagents which were initially added, i.e., there may be one or more intermediates which are produced in the mixture

which ultimately leads to the formation of the indicated and/or the desired product.

Nomenclature and Structures

In general, the nomenclature and chemical names used in this Application are based on ChembioOffice™ by CambridgeSoft™. Any open valency appearing on a carbon, oxygen sulfur or nitrogen atom in the structures herein indicates the presence of a hydrogen atom unless indicated otherwise. Where a nitrogen-containing heteroaryl ring is shown with an open valency on a nitrogen atom, and variables such as R^(a), R^(b) or R^(c) are shown on the heteroaryl ring, such variables may be bound or joined to the open valency nitrogen. Where a chiral center exists in a structure but no specific stereochemistry is shown for the chiral center, both enantiomers associated with the chiral center are encompassed by the structure. Where a structure shown herein may exist in multiple tautomeric forms, all such tautomers are encompassed by the structure. The atoms represented in the structures herein are intended to encompass all naturally occurring isotopes or mass numbers of such atoms. Thus, for example, the hydrogen atoms represented herein are meant to include deuterium and tritium, and the carbon atoms are meant to include C¹³ and C¹⁴ isotopes. One or more carbon atom(s) of a compound of the invention may be replaced by a silicon atom(s), and it is contemplated that one or more oxygen atom(s) of a compound of the invention may be replaced by a sulfur or selenium atom(s).

Compounds of the Invention

The invention provides compounds of the formula I:

or pharmaceutically acceptable salts thereof, wherein:

A is a group of formula: (a); (b); (c); or (d):

B is a group of formula: (e); (f); (g) or (h):

C is a group of formula: (i); (j); (k); or (m):

m is 0 or 1;

n is from 0 to 3;

p is from 0 to 2;

q is from 0 to 3;

r is from 0 to 3;

s is from 0 to 2;

t is 0 or 1;

u is from 0 to 3;

R¹ is: hydrogen; or C₁₋₆alkyl;

R² is: hydrogen; or C₁₋₆alkyl;

R³ is: C₁₋₆alkyl; C₃₋₆cycloalkyl; C₃₋₆cycloalkyl-C₁₋₆alkyl; heterocyclyl; heterocyclyl-C₁₋₆alkyl; phenyl-C₁₋₆alkyl; or C₁₋₆alkylsulfonyl, wherein the C₁₋₆alkyl, C₃₋₆cycloalkyl C₃₋₆cycloalkyl-C₁₋₆alkyl and phenyl-C₁₋₆alkyl each may be optionally substituted one or more time with halo;

R⁴ is: hydrogen; or C₁₋₆alkyl;

R⁵ is: hydrogen; or C₁₋₆alkyl;

R⁶ is: cyano; —(CH₂)_(v)—NR^(a)R^(b); —(CH₂)_(v)—S(O)_(w)—R^(c); —(CH₂), C(O)—NR^(a)R^(b); —(CH₂)_(v)—S(O)_(w)—NR^(a)R^(b); —(CH₂)_(v)—NR^(d)—C(O)—R^(c); —(CH₂)_(v)—NR^(d)—C(O)—NR^(a)R^(b); or —(CH₂)_(v)—NR^(d)—S(O)_(w)—R^(c), wherein:

-   -   v is 0 or 1,     -   w is from 0 to 2;     -   R^(a) and R^(b) each independently is: hydrogen; or C₁₋₆alkyl;     -   R^(c) is: C₁₋₆alkyl; C₃₋₆cycloalkyl; or         C₃₋₆cycloalkyl-C₁₋₆alkyl; and     -   R^(d) is: hydrogen; or C₁₋₆alkyl;

each R⁷ is independently: C₁₋₆alkyl; halo; C₁₋₆alkoxy; cyano; halo-C₁₋₆alkyl; hydroxy-C₁₋₆alkyl; halo-C₁₋₆alkoxy; or C₁₋₆alkylsulfonyl;

R⁸ is: C₁₋₆alkyl; C₃₋₆cycloalkyl; or C₃₋₆cycloalkyl-C₁₋₆alkyl;

R⁹ is: hydrogen; or C₁₋₆alkyl;

R¹⁰ is: hydrogen; or C₁₋₆alkyl;

R¹¹ is: hydrogen; hydroxy; cyano; —(CH₂)_(n)—NR^(a)R^(b); —(CH₂)_(n)—S(O)_(v)—R^(c); —(CH₂)_(n)—C(O)—NR^(a)R^(b); —(CH₂)_(n)—S(O)_(v)—NR^(a)R^(b); —(CH₂)_(n)—NR^(d)—C(O)—R^(c); —(CH₂)_(v)—NR^(d)—C(O)—NR^(a)R^(b); or —(CH₂)_(n)—NR^(d)—S(O)_(v)—R^(c).

each R¹² is independently: C₁₋₆alkyl; halo; C₁₋₆alkoxy; cyano; halo-C₁₋₆alkyl; halo-C₁₋₆alkoxy; or C₁₋₆alkylsulfonyl;

each R¹³ is independently: C₁₋₆alkyl; halo; C₁₋₆alkoxy; cyano; halo-C₁₋₆alkyl; halo-C₁₋₆alkoxy; or C₁₋₆alkylsulfonyl;

each R¹⁴ is independently: C₁₋₆alkyl; halo; C₁₋₆alkoxy; cyano; halo-C₁₋₆alkyl; halo-C₁₋₆alkoxy; or C₁₋₆alkylsulfonyl;

R¹⁵ is: C₁₋₆alkyl; C₃₋₆cycloalkyl; or C₃₋₆cycloalkyl-C₁₋₆alkyl;

R¹⁶ is: hydrogen; or C₁₋₆alkyl;

R¹⁷ is: hydrogen; or C₁₋₆alkyl;

each R¹⁸ is independently: C₁₋₆alkyl; halo; C₁₋₆alkoxy; cyano; halo-C₁₋₆alkyl; halo-C₁₋₆alkoxy; or C₁₋₆alkylsulfonyl; and

R¹⁹ is C₁₋₆alkyl;

provided that the compound is not N-isobutyl-N-[5-(3-methanesulfonyl-phenyl)-thiophen-2-ylmethyl]-C-phenyl-methanesulfonamide.

In certain embodiments of formula I, when: m is 1; R¹, R², R³ and R⁴ are hydrogen; R³ is isobutyl; and B is a group of formula (f); then A is not 3-methanesulfonyl-phenyl.

In certain embodiments of formula I, when m is 1; R¹, R², R³ and R⁴ are hydrogen; R³ is isobutyl; and B is a group of formula (f); then R⁶ is not methanesulfonyl.

In certain embodiments of formula I, m is 0.

In certain embodiments of formula I, m is 1.

In certain embodiments of formula I, n is from 0 to 2.

In certain embodiments of formula I, n is 0 or 1.

In certain embodiments of formula I, n is 0.

In certain embodiments of formula I, n is 1.

In certain embodiments of formula I, p is 0 or 1.

In certain embodiments of formula I, p is 0.

In certain embodiments of formula I, p is 1.

In certain embodiments of formula I, q is from 0 to 2.

In certain embodiments of formula I, q is 0 or 1.

In certain embodiments of formula I, q is 0.

In certain embodiments of formula I, q is 1.

In certain embodiments of formula I, r is from 0 to 2.

In certain embodiments of formula I, r is 0 or 1.

In certain embodiments of formula I, r is 0.

In certain embodiments of formula I, r is 1.

In certain embodiments of formula I, s is 0 or 1.

In certain embodiments of formula I, s is 0.

In certain embodiments of formula I, s is 1.

In certain embodiments of formula I, t is 0.

In certain embodiments of formula I, t is 1.

In certain embodiments of formula I, u is from 0 to 2.

In certain embodiments of formula I, u is 0 or 1.

In certain embodiments of formula I, u is 0.

In certain embodiments of formula I, u is 1.

In certain embodiments of formula I, A is a group of formula (a).

In certain embodiments of formula I, A is a group of formula (b).

In certain embodiments of formula I, A is a group of formula (c).

In certain embodiments of formula I, A is a group of formula (d).

In certain embodiments of formula I, B is a group of formula (e).

In certain embodiments of formula I, B is a group of formula (f).

In certain embodiments of formula I, B is a group of formula (g).

In certain embodiments of formula I, B is a group of formula (h).

In certain embodiments of formula I, C is a group of formula (i).

In certain embodiments of formula I, C is a group of formula (j).

In certain embodiments of formula I, C is a group of formula (k).

In certain embodiments of formula I, C is a group of formula (m).

In certain embodiments of formula I, A is a group of formula (a1) or (a2);

In certain embodiments of formula I, A is a group of formula (a1).

In certain embodiments of formula I, A is a group of formula (a2).

In certain embodiments of formula I, B is a group of formula (e1) or (e2);

In certain embodiments of formula I, B is a group of formula (e1).

In certain embodiments of formula I, B is a group of formula (e2)

In certain embodiments of formula I, B is a group of formula (f1);

In certain embodiments of formula I, B is a group of formula (g1);

In certain embodiments of formula I, B is a group of formula (h1) or (h2);

In certain embodiments of formula I, B is a group of formula (h1).

In certain embodiments of formula I, B is a group of formula (h2).

In certain embodiments of formula I, R¹ is hydrogen.

In certain embodiments of formula I, R¹ is C₁₋₆alkyl.

In certain embodiments of formula I, R² is hydrogen.

In certain embodiments of formula I, R² is C₁₋₆alkyl.

In certain embodiments of formula I, R¹ and R² are hydrogen.

In certain embodiments of formula I, R³ is: C₁₋₆alkyl; C₃₋₆cycloalkyl; or C₃₋₆cycloalkyl-C₁₋₆alkyl; each of which may be optionally substituted one or more times with halo.

In certain embodiments of formula I, R³ is C₁₋₆alkyl optionally substituted one or more times with halo.

In certain embodiments of formula I, R³ is C₃₋₆cycloalkyl optionally substituted one or more times with halo.

In certain embodiments of formula I, R³ is C₃₋₆cycloalkyl-C₁₋₆alkyl optionally substituted one or more times halo.

In certain embodiments of formula I, R³ is: C₁₋₆alkyl; C₃₋₆cycloalkyl; or C₃₋₆cycloalkyl-C₁₋₆alkyl.

In certain embodiments of formula I, R³ is C₁₋₆alkyl.

In certain embodiments of formula I, R³ is C₃₋₆cycloalkyl.

In certain embodiments of formula I, R³ is C₃₋₆cycloalkyl-C₁₋₆alkyl.

In certain embodiments of formula I, R³ is: C₁₋₆alkyl; cyano-C₁₋₆alkyl; C₁₋₆alkoxy-C₁₋₆alkyl; halo-C₁₋₆alkyl; di-C₁₋₆alkylamino-C₁₋₆alkyl; C₁₋₆alkylamino-C₁₋₆alkyl; C₃₋₆cycloalkyl;

C₃₋₆cycloalkyl-C₁₋₆alkyl; or heterocyclyl.

In certain embodiments of formula I, R³ is C₁₋₆alkyl.

In certain embodiments of formula I, R³ is C₃₋₆cycloalkyl.

In certain embodiments of formula I, R³ is C₃₋₆cycloalkyl-C₁₋₆alkyl.

In certain embodiments of formula I, R³ is cyano-C₁₋₆alkyl;

In certain embodiments of formula I, R³ is C₁₋₆alkoxy-C₁₋₆alkyl.

In certain embodiments of formula I, R³ is halo-C₁₋₆alkyl.

In certain embodiments of formula I, R³ is di-C₁₋₆alkylamino-C₁₋₆alkyl.

In certain embodiments of formula I, R³ is C₁₋₆alkylamino-C₁₋₆alkyl.

In certain embodiments of formula I, R³ is C₃₋₆cycloalkyl.

In certain embodiments of formula I, R³ is heterocyclyl.

In certain embodiments of formula I, R³ is C₁₋₆alkylsulfonyl.

In certain embodiments of formula I, R³ is: methyl; ethyl; n-propyl; isopropyl; isobutyl; tert-butyl; cyanomethyl; 2-(methoxy)-ethyl; 2,2,2-trifluoroethyl; 2-(dimethyamino)-ethyl; cyclopropyl; cyclobutyl; 1-methyl-azetidin-3-yl; oxatan3-yl; or 3-methyl-oxetan-3-yl.

In certain embodiments of formula I, R³ is methyl.

In certain embodiments of formula I, R³ is ethyl

In certain embodiments of formula I, R³ is n-propyl.

In certain embodiments of formula I, R³ is isopropyl.

In certain embodiments of formula I, R³ is isobutyl.

In certain embodiments of formula I, R³ is tert-butyl.

In certain embodiments of formula I, R³ is cyanomethyl.

In certain embodiments of formula I, R³ is 2-(methoxy)-ethyl.

In certain embodiments of formula I, R³ is 2,2,2-trifluoroethyl.

In certain embodiments of formula I, R³ is 2-(dimethyamino)-ethyl.

In certain embodiments of formula I, R³ is cyclopropyl.

In certain embodiments of formula I, R³ is cyclobutyl.

In certain embodiments of formula I, R³ is 1-methyl-azetidin-3-yl.

In certain embodiments of formula I, R³ is oxatan3-yl.

In certain embodiments of formula I, R³ is methanesulfonyl.

In certain embodiments of formula I, R³ is 3-methyl-oxetan-3-yl.

In certain embodiments of formula I, R⁴ is hydrogen.

In certain embodiments of formula I, R⁴ is C₁₋₆alkyl.

In certain embodiments of formula I, R⁵ is hydrogen.

In certain embodiments of formula I, R⁵ is C₁₋₆alkyl.

In certain embodiments of formula I, R⁴ and R⁵ are hydrogen.

In certain embodiments of formula I, R¹, R², R⁴ and R⁵ are hydrogen.

In certain embodiments of formula I, R⁶ is: —SO₂—R^(c); —(CH₂)_(n)—C(O)—NR^(a)R^(b); —(CH₂)_(n)—SO₂—NR^(a)R^(b); —(CH₂)_(n)—NR^(d)—C(O)—R^(c); or —(CH₂)_(n)—NR^(d)—SO₂—R^(c).

In certain embodiments of formula I, R⁶ is cyano;

In certain embodiments of formula I, R⁶ is —(CH₂)_(n)—NR^(a)R^(b);

In certain embodiments of formula I, R⁶ is —(CH₂)_(n)—S(O)_(v)—R^(c);

In certain embodiments of formula I, R⁶ is —(CH₂)_(n)—C(O)—NR^(a)R^(b);

In certain embodiments of formula I, R⁶ is —(CH₂)_(n)—S(O)_(v)—NR^(a)R^(b);

In certain embodiments of formula I, R⁶ is —(CH₂)_(n)—NR^(d)—C(O)—R^(c);

In certain embodiments of formula I, R⁶ is —(CH₂)_(n)—NR^(d)—C(O)—NR^(a)R^(b).

In certain embodiments of formula I, R⁶ is —(CH₂)_(n)—NR^(d)—S(O)_(v)—R^(c).

In certain embodiments of formula I, v is 0.

In certain embodiments of formula I, v is 1.

In certain embodiments of formula I, w is 0.

In certain embodiments of formula I, w is 1.

In certain embodiments of formula I, w is 2.

In certain embodiments of formula I, R^(a) is hydrogen.

In certain embodiments of formula I, R^(a) is C₁₋₆alkyl.

In certain embodiments of formula I, R^(b) is hydrogen.

In certain embodiments of formula I, R^(b) is C₁₋₆alkyl.

In certain embodiments of formula I, R^(c) is C₁₋₆alkyl.

In certain embodiments of formula I, R^(c) is C₃₋₆cycloalkyl.

In certain embodiments of formula I, R^(c) is C₃₋₆cycloalkyl-C₁₋₆alkyl.

In certain embodiments of formula I, R^(d) is hydrogen.

In certain embodiments of formula I, R^(d) is C₁₋₆alkyl.

In certain embodiments of formula I, R⁷ is C₁₋₆alkyl.

In certain embodiments of formula I, R⁷ is halo.

In certain embodiments of formula I, R⁷ is C₁₋₆alkoxy.

In certain embodiments of formula I, R⁷ is cyano.

In certain embodiments of formula I, R⁷ is halo-C₁₋₆alkyl.

In certain embodiments of formula I, R⁷ is hydroxy-C₁₋₆alkyl.

In certain embodiments of formula I, R⁷ is halo-C₁₋₆alkoxy.

In certain embodiments of formula I, R⁷ is C₁₋₆alkylsulfonyl.

In certain embodiments of formula I, R⁸ is C₁₋₆alkyl.

In certain embodiments of formula I, R⁸ is C₃₋₆cycloalkyl.

In certain embodiments of formula I, R⁸ is C₃₋₆cycloalkyl-C₁₋₆alkyl.

In certain embodiments of formula I, R⁹ is hydrogen.

In certain embodiments of formula I, R⁹ is C₁₋₆alkyl.

In certain embodiments of formula I, R¹⁰ is hydrogen.

In certain embodiments of formula I, R¹⁰ is C₁₋₆alkyl.

In certain embodiments of formula I, R¹¹ is hydrogen.

In certain embodiments of formula I, R¹¹ is hydroxy.

In certain embodiments of formula I, R¹¹ is cyano.

In certain embodiments of formula I, R¹¹ is —(CH₂)_(n)—NR^(a)R^(b).

In certain embodiments of formula I, R¹¹ is —(CH₂)_(n)—S(O)_(v)—R^(c).

In certain embodiments of formula I, R¹¹ is —(CH₂)_(n)—C(O)—NR^(a)R^(b).

In certain embodiments of formula I, R¹¹ is —(CH₂)_(n)—S(O)_(v)—NR^(a)R^(b).

In certain embodiments of formula I, R¹¹ is —(CH₂)_(n)—NR^(d)—C(O)—R^(c).

In certain embodiments of formula I, R¹¹ is —(CH₂)_(n)—NR^(d)—S(O)_(n)—R^(c).

In certain embodiments of formula I, R¹² is C₁₋₆alkyl.

In certain embodiments of formula I, R¹² is halo.

In certain embodiments of formula I, R¹² is C₁₋₆alkoxy.

In certain embodiments of formula I, R¹² is cyano.

In certain embodiments of formula I, R¹² is halo-C₁₋₆alkyl.

In certain embodiments of formula I, R¹² is halo-C₁₋₆alkoxy.

In certain embodiments of formula I, R¹² is C₁₋₆alkylsulfonyl.

In certain embodiments of formula I, R¹³ is C₁₋₆alkyl.

In certain embodiments of formula I, R¹³ is halo.

In certain embodiments of formula I, R¹³ is C₁₋₆alkoxy.

In certain embodiments of formula I, R¹³ is cyano.

In certain embodiments of formula I, R¹³ is halo-C₁₋₆alkyl.

In certain embodiments of formula I, R¹³ is halo-C₁₋₆alkoxy.

In certain embodiments of formula I, R¹³ is C₁₋₆alkylsulfonyl.

In certain embodiments of formula I, R¹⁴ is C₁₋₆alkyl.

In certain embodiments of formula I, R¹⁴ is halo.

In certain embodiments of formula I, R¹⁴ is C₁₋₆alkoxy.

In certain embodiments of formula I, R¹⁴ is cyano.

In certain embodiments of formula I, R¹⁴ is halo-C₁₋₆alkyl.

In certain embodiments of formula I, R¹⁴ is halo-C₁₋₆alkoxy.

In certain embodiments of formula I, R¹⁴ is C₁₋₆alkylsulfonyl.

In certain embodiments of formula I, R¹⁵ is C₁₋₆alkyl.

In certain embodiments of formula I, R¹⁵ is C₃₋₆cycloalkyl.

In certain embodiments of formula I, R¹⁵ is C₃₋₆cycloalkyl-C₁₋₆alkyl.

In certain embodiments of formula I, R¹⁶ is hydrogen.

In certain embodiments of formula I, R¹⁶ is C₁₋₆alkyl.

In certain embodiments of formula I, R¹⁷ is hydrogen.

In certain embodiments of formula I, R¹⁷ is C₁₋₆alkyl.

In certain embodiments of formula I, R¹⁸ is C₁₋₆alkyl.

In certain embodiments of formula I, R¹⁸ is halo.

In certain embodiments of formula I, R¹⁸ is C₁₋₆alkoxy.

In certain embodiments of formula I, R¹⁸ is cyano.

In certain embodiments of formula I, R¹⁸ is halo-C₁₋₆alkyl.

In certain embodiments of formula I, R¹⁸ is halo-C₁₋₆alkoxy.

In certain embodiments of formula I, R¹⁸ is C₁₋₆alkylsulfonyl.

In certain embodiments of the invention, the compounds are of formula II:

wherein A, B, m, n, R¹, R², R³, R⁴, R⁵ and R⁶ are as defined herein.

In certain embodiments of the invention, the compounds are of formula III:

wherein n, r, R¹, R², R³, R⁴, R⁵, R⁶, R⁷ and R¹⁴ are as defined herein.

In certain embodiments of the invention, the compounds are of formula IV:

wherein n, r, R¹, R², R³, R⁴, R⁵, R⁶, R⁷ and R¹⁴ are as defined herein.

The invention also provides a method for treating a disease or condition mediated by or otherwise associated with the RORc receptor, the method comprising administering to a subject in need thereof an effective amount of a compound of the invention.

The disease may be arthritis such as rheumatoid arthritis or osteoarthritis.

The disease may be a asthma or COPD.

Representative compounds in accordance with the methods of the invention are shown in the experimental examples below.

Synthesis

Compounds of the present invention can be made by a variety of methods depicted in the illustrative synthetic reaction schemes shown and described below.

The starting materials and reagents used in preparing these compounds generally are either available from commercial suppliers, such as Aldrich Chemical Co., or are prepared by methods known to those skilled in the art following procedures set forth in references such as Fieser and Fieser's Reagents for Organic Synthesis; Wiley & Sons: New York, 1991, Volumes 1-15; Rodd's Chemistry of Carbon Compounds, Elsevier Science Publishers, 1989, Volumes 1-5 and Supplementals; and Organic Reactions, Wiley & Sons: New York, 1991, Volumes 1-40. The following synthetic reaction schemes are merely illustrative of some methods by which the compounds of the present invention can be synthesized, and various modifications to these synthetic reaction schemes can be made and will be suggested to one skilled in the art having referred to the disclosure contained in this Application.

The starting materials and the intermediates of the synthetic reaction schemes can be isolated and purified if desired using conventional techniques, including but not limited to, filtration, distillation, crystallization, chromatography, and the like. Such materials can be characterized using conventional means, including physical constants and spectral data.

Unless specified to the contrary, the reactions described herein may be conducted under an inert atmosphere at atmospheric pressure at a reaction temperature range of from about −78° C. to about 150° C., for example, from about 0° C. to about 125° C., or conveniently at about room (or ambient) temperature, e.g., about 20° C.

Scheme A below illustrates one synthetic procedure usable to prepare specific compounds of formula I, wherein X is a leaving group that may be the same or different in each occurrence, and m, A, B, C, R¹, R², R³, R⁴ and R⁵ are as defined herein.

In step 1 of Scheme A, biaryl alkyl amine compound a is reacted with an aryl or aralkyl sulfonyl halide compound b to afford aryl sulfonamide compound c. In step 2, an N-alkylation is carried out by treating compound c with alkylating agent d (which may be, for example, an alkyl halide or alkyl triflate), to yield an aryl sulfonamide compound of formula I in accordance with the invention.

Scheme B below shows another synthetic procedure usable to prepare specific compounds of formula I, wherein X is a leaving group that may be the same or different in each occurrence, and m, A, B, C, R¹, R², R³, R⁴ and R⁵ are as defined herein.

In step 1 of Scheme B, amine compound e is reacted with aryl or aralkyl sulfonyl halide compound b to give an aryl sulfonamide compound f. Compound i is then treated with biaryl alkyl halide compound g to give the aryl sulfonamide compound of formula I.

Many variations on the procedures of Scheme A and Scheme B are possible and will suggest themselves to those skilled in the art. Specific details for producing compounds of the invention are described in the Examples below.

Administration and Pharmaceutical Composition

The invention includes pharmaceutical compositions comprising at least one compound of the present invention, or an individual isomer, racemic or non-racemic mixture of isomers or a pharmaceutically acceptable salt or solvate thereof, together with at least one pharmaceutically acceptable carrier, and optionally other therapeutic and/or prophylactic ingredients.

In general, the compounds of the invention will be administered in a therapeutically effective amount by any of the accepted modes of administration for agents that serve similar utilities. Suitable dosage ranges are typically 1-500 mg daily, for example 1-100 mg daily, and most preferably 1-30 mg daily, depending upon numerous factors such as the severity of the disease to be treated, the age and relative health of the subject, the potency of the compound used, the route and form of administration, the indication towards which the administration is directed, and the preferences and experience of the medical practitioner involved. One of ordinary skill in the art of treating such diseases will be able, without undue experimentation and in reliance upon personal knowledge and the disclosure of this Application, to ascertain a therapeutically effective amount of the compounds of the present invention for a given disease.

Compounds of the invention may be administered as pharmaceutical formulations including those suitable for oral (including buccal and sub-lingual), rectal, nasal, topical, pulmonary, vaginal, or parenteral (including intramuscular, intraarterial, intrathecal, subcutaneous and intravenous) administration or in a form suitable for administration by inhalation or insufflation. A particular manner of administration is generally oral using a convenient daily dosage regimen which can be adjusted according to the degree of affliction.

A compound or compounds of the invention, together with one or more conventional adjuvants, carriers, or diluents, may be placed into the form of pharmaceutical compositions and unit dosages. The pharmaceutical compositions and unit dosage forms may be comprised of conventional ingredients in conventional proportions, with or without additional active compounds or principles, and the unit dosage forms may contain any suitable effective amount of the active ingredient commensurate with the intended daily dosage range to be employed. The pharmaceutical compositions may be employed as solids, such as tablets or filled capsules, semisolids, powders, sustained release formulations, or liquids such as solutions, suspensions, emulsions, elixirs, or filled capsules for oral use; or in the form of suppositories for rectal or vaginal administration; or in the form of sterile injectable solutions for parenteral use. Formulations containing about one (1) milligram of active ingredient or, more broadly, about 0.01 to about one hundred (100) milligrams, per tablet, are accordingly suitable representative unit dosage forms.

The compounds of the invention may be formulated in a wide variety of oral administration dosage forms. The pharmaceutical compositions and dosage forms may comprise a compound or compounds of the present invention or pharmaceutically acceptable salts thereof as the active component. The pharmaceutically acceptable carriers may be either solid or liquid. Solid form preparations include powders, tablets, pills, capsules, cachets, suppositories, and dispersible granules. A solid carrier may be one or more substances which may also act as diluents, flavouring agents, solubilizers, lubricants, suspending agents, binders, preservatives, tablet disintegrating agents, or an encapsulating material. In powders, the carrier generally is a finely divided solid which is a mixture with the finely divided active component. In tablets, the active component generally is mixed with the carrier having the necessary binding capacity in suitable proportions and compacted in the shape and size desired. The powders and tablets may contain from about one (1) to about seventy (70) percent of the active compound. Suitable carriers include but are not limited to magnesium carbonate, magnesium stearate, talc, sugar, lactose, pectin, dextrin, starch, gelatine, tragacanth, methylcellulose, sodium carboxymethylcellulose, a low melting wax, cocoa butter, and the like. The term “preparation” is intended to include the formulation of the active compound with encapsulating material as carrier, providing a capsule in which the active component, with or without carriers, is surrounded by a carrier, which is in association with it. Similarly, cachets and lozenges are included. Tablets, powders, capsules, pills, cachets, and lozenges may be as solid forms suitable for oral administration.

Other forms suitable for oral administration include liquid form preparations including emulsions, syrups, elixirs, aqueous solutions, aqueous suspensions, or solid form preparations which are intended to be converted shortly before use to liquid form preparations. Emulsions may be prepared in solutions, for example, in aqueous propylene glycol solutions or may contain emulsifying agents, for example, such as lecithin, sorbitan monooleate, or acacia. Aqueous solutions can be prepared by dissolving the active component in water and adding suitable colorants, flavors, stabilizers, and thickening agents. Aqueous suspensions can be prepared by dispersing the finely divided active component in water with viscous material, such as natural or synthetic gums, resins, methylcellulose, sodium carboxymethylcellulose, and other well known suspending agents. Solid form preparations include solutions, suspensions, and emulsions, and may contain, in addition to the active component, colorants, flavors, stabilizers, buffers, artificial and natural sweeteners, dispersants, thickeners, solubilizing agents, and the like.

The compounds of the invention may be formulated for parenteral administration (e.g., by injection, for example bolus injection or continuous infusion) and may be presented in unit dose form in ampoules, pre-filled syringes, small volume infusion or in multi-dose containers with an added preservative. The compositions may take such forms as suspensions, solutions, or emulsions in oily or aqueous vehicles, for example solutions in aqueous polyethylene glycol. Examples of oily or nonaqueous carriers, diluents, solvents or vehicles include propylene glycol, polyethylene glycol, vegetable oils (e.g., olive oil), and injectable organic esters (e.g., ethyl oleate), and may contain formulatory agents such as preserving, wetting, emulsifying or suspending, stabilizing and/or dispersing agents. Alternatively, the active ingredient may be in powder form, obtained by aseptic isolation of sterile solid or by lyophilization from solution for constitution before use with a suitable vehicle, e.g., sterile, pyrogen-free water.

The compounds of the invention may be formulated for topical administration to the epidermis as ointments, creams or lotions, or as a transdermal patch. Ointments and creams may, for example, be formulated with an aqueous or oily base with the addition of suitable thickening and/or gelling agents. Lotions may be formulated with an aqueous or oily base and will in general also containing one or more emulsifying agents, stabilizing agents, dispersing agents, suspending agents, thickening agents, or coloring agents. Formulations suitable for topical administration in the mouth include lozenges comprising active agents in a flavored base, usually sucrose and acacia or tragacanth; pastilles comprising the active ingredient in an inert base such as gelatine and glycerine or sucrose and acacia; and mouthwashes comprising the active ingredient in a suitable liquid carrier.

The compounds of the invention may be formulated for administration as suppositories. A low melting wax, such as a mixture of fatty acid glycerides or cocoa butter is first melted and the active component is dispersed homogeneously, for example, by stirring. The molten homogeneous mixture is then poured into convenient sized molds, allowed to cool, and to solidify.

The compounds of the invention may be formulated for vaginal administration. Pessaries, tampons, creams, gels, pastes, foams or sprays containing in addition to the active ingredient such carriers as are known in the art to be appropriate.

The subject compounds may be formulated for nasal administration. The solutions or suspensions are applied directly to the nasal cavity by conventional means, for example, with a dropper, pipette or spray. The formulations may be provided in a single or multidose form. In the latter case of a dropper or pipette, this may be achieved by the patient administering an appropriate, predetermined volume of the solution or suspension. In the case of a spray, this may be achieved, for example, by means of a metering atomizing spray pump.

The compounds of the invention may be formulated for aerosol administration, particularly to the respiratory tract and including intranasal administration. The compound will generally have a small particle size, for example, of the order of five (5) microns or less. Such a particle size may be obtained by means known in the art, for example by micronization. The active ingredient is provided in a pressurized pack with a suitable propellant such as a chlorofluorocarbon (CFC), for example, dichlorodifluoromethane, trichlorofluoromethane, or dichlorotetrafluoroethane, or carbon dioxide or other suitable gas. The aerosol may conveniently also contain a surfactant such as lecithin. The dose of drug may be controlled by a metered valve. Alternatively the active ingredients may be provided in a form of a dry powder, for example, a powder mix of the compound in a suitable powder base such as lactose, starch, starch derivatives such as hydroxypropylmethyl cellulose and polyvinylpyrrolidine (PVP). The powder carrier will form a gel in the nasal cavity. The powder composition may be presented in unit dose form, for example, in capsules or cartridges of e.g., gelatine or blister packs from which the powder may be administered by means of an inhaler.

When desired, formulations can be prepared with enteric coatings adapted for sustained or controlled release administration of the active ingredient. For example, the compounds of the present invention can be formulated in transdermal or subcutaneous drug delivery devices. These delivery systems are advantageous when sustained release of the compound is necessary and when patient compliance with a treatment regimen is crucial. Compounds in transdermal delivery systems are frequently attached to an skin-adhesive solid support. The compound of interest can also be combined with a penetration enhancer, e.g., Azone (1-dodecylazacycloheptan-2-one). Sustained release delivery systems are inserted subcutaneously into the subdermal layer by surgery or injection. The subdermal implants encapsulate the compound in a lipid soluble membrane, e.g., silicone rubber, or a biodegradable polymer, e.g., polylactic acid.

The pharmaceutical preparations may be in unit dosage forms. In such form, the preparation is subdivided into unit doses containing appropriate quantities of the active component. The unit dosage form can be a packaged preparation, the package containing discrete quantities of preparation, such as packeted tablets, capsules, and powders in vials or ampoules. Also, the unit dosage form can be a capsule, tablet, cachet, or lozenge itself, or it can be the appropriate number of any of these in packaged form.

Other suitable pharmaceutical carriers and their formulations are described in Remington: The Science and Practice of Pharmacy 1995, edited by E. W. Martin, Mack Publishing Company, 19th edition, Easton, Pa. Representative pharmaceutical formulations containing a compound of the present invention are described below.

Utility

The compounds of the invention are useful for treatment of immune disorders generally. The compounds may be used for treatment of arthritis, including rheumatoid arthritis, osteoarthritis, psoriatic arthritis, septic arthritis, spondyloarthropathies, gouty arthritis, systemic lupus erythematosus and juvenile arthritis, osteoarthritis, and other arthritic conditions.

The compounds may be used for treatment of respiratory disorders such as chronic obstructive pulmonary disease (COPD), asthma, bronchospasm, and the like.

The compounds may be used for treatment of gastrointestinal disorder” (“GI disorder”) such as Irritable Bowel Syndrome (IBS), Inflammatory Bowel Disease (IBD), biliary colic and other biliary disorders, renal colic, diarrhea-dominant IBS, pain associated with GI distension, and the like.

The compounds may be used for treatment of pain conditions such as inflammatory pain; arthritic pain, surgical pain; visceral pain; dental pain; premenstrual pain; central pain; pain due to burns; migraine or cluster headaches; nerve injury; neuritis; neuralgias; poisoning; ischemic injury; interstitial cystitis; cancer pain; viral, parasitic or bacterial infection; post-traumatic injury; or pain associated with irritable bowel syndrome.

EXAMPLES

The following preparations and examples are given to enable those skilled in the art to more clearly understand and to practice the present invention. They should not be considered as limiting the scope of the invention, but merely as being illustrative and representative thereof.

Unless otherwise stated, all temperatures including melting points (i.e., MP) are in degrees celsius (° C.). It should be appreciated that the reaction which produces the indicated and/or the desired product may not necessarily result directly from the combination of two reagents which were initially added, i.e., there may be one or more intermediates which are produced in the mixture which ultimately leads to the formation of the indicated and/or the desired product. The following abbreviations may be used in the Preparations and Examples.

LIST OF ABBREVIATIONS

-   AcOH Acetic acid -   AIBN 2,2′-Azobis(2-methylpropionitrile) -   atm Atmosphere -   (BOC)₂O Di-tert-butyl dicarbonate -   DCM Dichloromethane/Methylene chloride -   DIAD Diisopropyl azodicarboxylate -   DIPEA Diisopropylethylamine -   DMAP 4-Dimethylaminopyridine -   DME 1,2-Dimethoxyethane -   DMF N,N-Dimethylformamide -   DMSO Dimethyl sulfoxide -   DPPF 1,1′-Bis(diphenylphosphino)ferrocene -   Et₂O Diethyl ether -   EtOH Ethanol/Ethyl alcohol -   EtOAc Ethyl acetate -   HATU 2-(1H-7-Azabenzotriazol-1-yl)-1,1,3,3-tetramethyl uronium     hexafluorophosphate methanaminium -   HBTU O-Benzotriazol-1-yl-N,N,N′,N′-tetramethyluronium     hexafluorophosphate -   HOBT 1-Hydroxybenzotriazole -   HPLC High pressure liquid chromatography

RP HPLC Reverse phase high pressure liquid chromatography

-   i-PrOH Isopropanol/isopropyl alcohol -   LCMS Liquid Chromatograph/Mass Spectroscopy -   MeOH Methanol/Methyl alcohol -   MW Microwaves -   NBS N-Bromosuccinimide -   NMP 1-Methyl-2-pyrrolidinone -   psi Pound per square inch -   RT Room temperature -   TBDMS tert-Butyldimethylsilyl -   TFA Trifluoroacetic acid -   THF Tetrahydrofuran -   TLC Thin layer chromatography

Example 1 N-[[2-fluoro-4-(4-pyridyl)phenyl]methyl]-1-phenyl-N-(2,2,2-trifluoroethyl)methanesulfonamide

Step 1: N-(4-Bromo-2-fluorobenzyl)-1-phenylmethanesulfonamide

To a solution of (4-bromo-2-fluoro-phenyl)methanamine (3 g, 14.7 mmol) in dichloromethane (50 mL) was added N,N-diisopropylethylamine (3.3 mL, 19.1), followed by phenylmethanesulfonyl chloride (3.3 g, 17.6 mmol) and the reaction was stirred at ambient temperature for 3 hours. The reaction was diluted with more dichloromethane and washed with water and brine, dried with MgSO₄, concentrated and purified by silica gel column chromatography (20-100% EtOAc in heptane) to give N-[(4-bromo-2-fluoro-phenyl)methyl]-1-phenyl-methanesulfonamide (4.22 g, 80% yield). LCMS (m/z) ES⁺ 358 [M+1]⁺.

Step 2: N-(4-Bromo-2-fluorobenzyl)-1-phenyl-N-(2,2,2-trifluoroethyl)methanesulfonamide

To a solution of N-[(4-bromo-2-fluoro-phenyl)methyl]-1-phenyl-methanesulfonamide (4.21 g, 11.8 mmol) in N,N-dimethylacetamide (40 mL) was added sodium hydride (60% in mineral oil) (611 mg, 15.3 mmol) and the reaction was stirred at ambient temperature for 30 minutes. 2,2,2-trifluoroethyl trifluoromethanesulfonate (2.0 mL, 14.1 mmol) was then slowly added (exothermic) and the reaction was stirred at ambient temperature for 2.5 hours. Water was added and the reaction was diluted with EtOAc, washed with water (×2), brine, dried with MgSO₄, concentrated and purified by silica gel column chromatography (0-100% EtOAc in heptane) to give N-[(4-bromo-2-fluoro-phenyl)methyl]-1-phenyl-N-(2,2,2-trifluoroethyl)methanesulfonamide (4.62 g, 89% yield). LCMS (m/z) ES⁺ 457 [M+18]⁺.

Step 3: N-[[2-fluoro-4-(4-pyridyl)phenyl]methyl]-1-phenyl-N-(2,2,2-trifluoroethyl)methanesulfonamide

N-[(4-bromo-2-fluoro-phenyl)methyl]-1-phenyl-N-(2,2,2-trifluoroethyl)methanesulfonamide (2 g, 4.54 mmol), 4-pyridylboronic acid (931 mg, 6.81 mmol) dichlorobis(di-tert-butyl(4-dimethylaminophenyl)phosphine)palladium(II) (161 mg, 0.23 mmol) potassium acetate (669 mg, 6.81 mmol) and sodium carbonate (722 mg, 6.81 mmol) were weighed out and the reaction was purged with nitrogen. Acetonitrile (15 mL) and water (4.5 mL) were then added and the reaction was stirred at 80° C. for 16 hours. The reaction was filtered through diatomaceous earth, concentrated and purified by silica gel column chromatography (20-100% EtOAc in heptane) to give N-[[2-fluoro-4-(4-pyridyl)phenyl]methyl]-1-phenyl-N-(2,2,2-trifluoroethyl)methanesulfonamide (1.85 g, 93% yield). ¹H NMR (400 MHz, DMSO) δ 8.69-8.62 (m, 2H), 7.79-7.74 (m, 2H), 7.74-7.66 (m, 2H), 7.57 (t, J=8.1 Hz, 1H), 7.50-7.36 (m, 5H), 4.68 (s, 2H), 4.53 (s, 2H), 4.04 (q, J=9.3 Hz, 2H); LCMS (m/z) ES⁺ 439.0 [M+1]⁺.

Example 2 N-Isobutyl-N-(4′-methanesulfonyl-biphenyl-4-ylmethyl)-C-phenyl-methanesulfonamide

Step 1: N-(4-Bromobenzyl)-1-phenylmethanesulfonamide

To a solution of (4-bromophenyl)methanamine (2.5 g, 13 mmol) in dichloromethane (45 mL) was added N,N-diisopropylethylamine (3.5 mL, 20 mmol), followed by phenylmethanesulfonyl chloride (3.1 g, 16 mmol) and the reaction was stirred at ambient temperature for 1 hour. The precipitate was then collected by filtration, washed with dichloromethane and dried under vacuum to give N-[(4-bromophenyl)methyl]-1-phenyl-methanesulfonamide (2.79 g, 61% yield). LCMS (m/z) ES⁺ 340.0 [M+1]⁺

Step 2: N-(4-Bromobenzyl)-N-isobutyl-1-phenylmethanesulfonamide

To a solution of N-[(4-bromophenyl)methyl]-1-phenyl-methanesulfonamide (2 g, 5.82 mmol) in N,N-dimethylacetamide (20 mL) was added sodium hydride (60% in mineral oil) (353 mg, 8.8 mmol) and the reaction was stirred at ambient temperature for 30 minutes. 1-Bromo-2-methyl-propane (0.96 mL, 8.81 mmol) was then added and the reaction was stirred for 16 hours. Water was added and the reaction was diluted with EtOAc. The reaction was then washed with water (3×) and brine, dried with MgSO₄, concentrated and purified by silica gel column chromatography (0-50% EtOAc in heptane) to give N-[(4-bromophenyl)methyl]-N-isobutyl-1-phenyl-methanesulfonamide (1.20 g, 52% yield). LCMS (m/z) ES⁺ 418.1 [M+Na]⁺.

Step 3: N-Isobutyl-N-(4′-methanesulfonyl-biphenyl-4-ylmethyl)-C-phenyl-methanesulfonamide

In a vial, N-(4-bromobenzyl)-N-isobutyl-1-phenylmethanesulfonamide (75 mg, 0.19 mmol) dichlorobis(di-tert-butyl(4-dimethylaminophenyl)phosphine)palladium(II) (13 mg, 0.019 mmol) 4-(methylsulfonyl)phenylboronic acid (76 mg, 0.38 mmol), potassium acetate (28 mg, 0.28 mmol) and sodium carbonate (30 mg, 0.28 mmol) were combined and the vial was purged with nitrogen. Acetonitrile (1 mL) and water (0.3 mL) were then added and the reaction was stirred at 100° C. for 5 hours. The reaction was partitioned between dichloromethane and saturated aqueous Na₂CO₃ and the organic layer was separated using a phase separator cartridge. The reaction was concentrated and purified by preparative reverse phase HPLC to yield 20 mg of N-Isobutyl-N-(4′-methanesulfonyl-biphenyl-4-ylmethyl)-C-phenyl-methanesulfonamide. ¹H NMR (400 MHz, DMSO) δ 7.97 (q, J=8.6 Hz, 4H), 7.76 (d, J=8.2 Hz, 2H), 7.52 (d, J=8.2 Hz, 2H), 7.47-7.33 (m, 5H), 4.50 (s, 2H), 4.33 (s, 2H), 3.24 (s, 3H), 2.89 (d, J=7.4 Hz, 2H), 1.68-1.41 (m, 1H), 0.69 (d, J=6.6 Hz, 6H). LCMS (m/z) ES⁺ 472.0 [M+1]⁺.

Example 3 N-Isobutyl-N-[5-(4-methanesulfonylamino-phenyl)-thiophen-2-ylmethyl]-C-phenyl-methanesulfonamide

Step 1: N-((5-Bromothiophen-2-yl)methyl)-1-phenylmethanesulfonamide

To a suspension of (5-bromo-2-thienyl)methanamine hydrochloride (2 g, 8.75 mmol) in dichloromethane (30 mL) was added N,N-diisopropylethylamine (3.2 mL, 18.4 mmol) and the reaction was stirred until complete dissolution. Phenylmethanesulfonyl chloride (1.75 g, 9.18 mmol) was then added and the reaction was stirred at ambient temperature for 16 hours. The reaction was diluted with dichloromethane and washed with water and brine, dried with MgSO₄, concentrated and purified by silica gel column chromatography (0-100% EtOAc in heptane) to give N-[(5-bromo-2-thienyl)methyl]-1-phenyl-methanesulfonamide (2.55 g, 84% yield). LCMS (m/z) ES⁺ 364 [M+18]⁺.

Step 2: N-((5-Bromothiophen-2-yl)methyl)-N-isobutyl-1-phenylmethanesulfonamide

To a solution of N-[(5-bromo-2-thienyl)methyl]-1-phenyl-methanesulfonamide (2.55 g, 7.36 mmol) in N,N-dimethylacetamide (25 mL) was added sodium hydride (60% in mineral oil) (324 mg, 8.1 mmol) and the reaction was stirred under nitrogen for 30 minutes. 1-Bromo-2-methyl-propane (1.2 mL, 11.0 mmol) was then added and the reaction was stirred at ambient temperature for 16 hours. Water was added, the reaction was diluted with EtOAc and washed with water (×2) and brine. The organic layer was concentrated and purified by silica gel column chromatography (0-100% EtOAc in heptane) to give N-[(5-bromo-2-thienyl)methyl]-N-isobutyl-1-phenyl-methanesulfonamide (2.42 g, 82% yield). LCMS (m/z) ES⁺ 419 [M+18]⁺.

Step 3: N-Isobutyl-N-[5-(4-methanesulfonylamino-phenyl)-thiophen-2-ylmethyl]-C-phenyl-methanesulfonamide

In a vial, N-[(5-bromo-2-thienyl)methyl]-N-isobutyl-1-phenyl-methanesulfonamide (75 mg, 0.18 mmol), dichlorobis(di-tert-butyl(4-dimethylaminophenyl)phosphine)palladium(II) (13 mg, 0.019 mmol), 4-(methylsulfonamido)phenylboronic acid (80 mg, 0.37 mmol), potassium acetate (27 mg, 0.28 mmol) and sodium carbonate (30 mg, 0.28 mmol) were weighed out and the vial was purged with nitrogen. Acetonitrile (1 mL) and water (0.3 mL) were then added and the reaction was stirred at 100° C. for 48 hours. The reaction was partitioned between dichloromethane and sat. Na₂CO₃ and the organic layer was separated using a phase separator cartridge. The reaction was concentrated and purified by preparative reverse phase HPLC to yield 31.5 mg of N-Isobutyl-N-[5-(4-methanesulfonylamino-phenyl)-thiophen-2-ylmethyl]-C-phenyl-methanesulfonamide. ¹H NMR (400 MHz, DMSO) δ 9.81 (s, 1H), 7.66-7.52 (m, 2H), 7.45-7.33 (m, 5H), 7.28 (d, J=3.6 Hz, 1H), 7.26-7.18 (m, 2H), 7.06 (d, J=3.6 Hz, 1H), 4.44 (d, J=5.7 Hz, 4H), 2.99 (s, 3H), 2.88 (d, J=7.5 Hz, 2H), 1.82-1.59 (m, 1H), 0.74 (d, J=6.6 Hz, 6H); LCMS (m/z) ES⁺ 266.1 [C₁₂H₁₂NO₂S₂]⁺.

Example 4 4′-[(R)-1-(Isobutyl-phenylmethanesulfonyl-amino)-ethyl]-biphenyl-4-carboxylic acid amide

Step 1: (R)—N-(1-(4-Bromophenyl)ethyl)(phenyl)methanesulfonamide

Phenylmethanesulfonyl chloride (10.5 g, 55 mmol) was added into a solution of (R)-1-(4-bromophenyl)ethanamine (10 g, 50 mmol) in pyridine (100 mL) drop wise at 0° C. The reaction mixture was stirred at 10° C. for about 1 hour. The reaction was poured to water (500 mL), adjust to pH=5 with 6 N aqueous HCl, extracted with EtOAc (100 mL×4). The organic layer was dried over Na₂SO₄, filtered, and concentrated to give the title compound (13 g, 73% yield) as pale yellow solid which was used in the next step without further purification.

Step 2: (R)—N-(1-(4-Bromophenyl)ethyl)-N-isobutyl(phenyl)methanesulfonamide

1-Bromo-2-methylpropane (10.1 g, 73 mmol) was added into a solution of (R)—N-(1-(4-bromophenyl)ethyl)(phenyl)methanesulfonamide (13 g, 36.7 mmol) and Cs₂CO₃ (23.8 g, 73 mmol) in DMF (150 mL) dropwise at 0° C. The mixture was then stirred at 80° C. for 20 h then cooled to ambient temperature. The mixture was filtered and the filtrate was concentrated in vacuo to remove the solvent. The residue was taken up with DCM (100 mL) and washed with water (100 mL). The organic layer was dried over Na₂SO₄, filtered and concentrated in vacuo to give a residue which was purified on silica gel chromatography (petroleum ether: ethyl acetate=10:1) to give (R)—N-(1-(4-bromophenyl)ethyl)-N-isobutyl(phenyl)methanesulfonamide (10.8 g, 72% yield) as colorless oil. ¹H NMR (300 MHz, DMSO-d₆) δ ppm 0.71 (d, 3H), 0.77 (d, 3H), 1.48 (d, 3H), 1.60-1.66 (m, 1H), 2.77-2.83 (m, 2H), 4.11-4.22 (m, 2H), 4.94-4.96 (m, 2H), 7.24-7.48 (m, 9H); 99% of purity (HPLC, 214 nm), >99% ee value (Chiral-HPLC, 214 nm).

Step 3: 4′-[(R)-1-(Isobutyl-phenylmethanesulfonyl-amino)-ethyl]-biphenyl-4-carboxylic acid amide

In a vial, N-[(1R)-1-(4-bromophenyl)ethyl]-N-isobutyl-1-phenyl-methanesulfonamide (60 mg, 0.15 mmol), 4-carbamoylphenylboronic acid (36 mg, 0.22 mmol) dichlorobis(di-tert-butyl(4-dimethylaminophenyl)phosphine)palladium(II) (10 mg, 0.015 mmol), potassium acetate (22 mg, 0.22 mmol) and sodium carbonate (23 mg, 0.22 mmol) were combined and the reaction was purged with nitrogen. Acetonitrile (1 mL) and water (0.3 mL) were then added and the reaction was stirred at 100° C. for 16 hours. The reaction was then partitioned between dichloromethane and saturated aqueous Na₂CO₃ and the organic layer was isolated using a phase-separator cartridge, concentrated and purified by preparative reverse phase HPLC to yield 34 mg of 4′-[(R)-1-(Isobutyl-phenylmethanesulfonyl-amino)-ethyl]-biphenyl-4-carboxylic acid amide. ¹H NMR (400 MHz, DMSO) δ 8.01 (s, 1H), 7.98-7.91 (m, 2H), 7.80-7.70 (m, 4H), 7.57 (d, J=8.3 Hz, 2H), 7.47-7.32 (m, 6H), 5.08 (q, J=7.0 Hz, 1H), 4.42 (d, J=13.4 Hz, 1H), 4.34 (d, J=13.4 Hz, 1H), 2.98-2.75 (m, 2H), 1.66-1.47 (m, 4H), 0.65 (dd, J=15.2, 6.6 Hz, 6H); LCMS (m/z) ES⁺ 451.2 [M+1]⁺.

Example 5 4′-[(S)-1-(Isobutyl-phenylmethanesulfonyl-amino)-ethyl]-biphenyl-4-carboxylic acid amide

Step 1: (S)—N-(1-(4-Bromophenyl)ethyl)(phenyl)methanesulfonamide

Phenylmethanesulfonyl chloride (28.1 g, 147.7 mmol) was added into a solution of (S)-1-(4-bromophenyl)ethanamine (28.0 g, 140.7 mmol) and triethylamine (21.3 g, 211.1 mmol) in dichloromethane (400 mL) drop wise at 0° C. The reaction mixture was stirred at ambient temperature overnight. Upon the completion of reaction determined by LCMS, the reaction solution was washed with dilute aqueous HCl, saturated aqueous NaHCO₃ and brine. The organic layer was dried over Na₂SO₄, filtered, and concentrated to give the title compound (35.3 g, 71% yield) as pale yellow solid which was used in the next step without further purification.

Step 2: (S)—N-(1-(4-Bromophenyl)ethyl)-N-isobutyl(phenyl)methanesulfonamide

1-Bromo-2-methylpropane (34.7 g, 255.0 mmol) was added into a solution of (S)—N-(1-(4-bromophenyl)ethyl)(phenyl)methanesulfonamide (30.0 g, 85.0 mmol) and K₂CO₃ (35.2 g, 255.0 mmol) in CH₃CN (500 mL) dropwise at 0° C. The mixture was then stirred at reflux for 48 h before it was cooled to ambient temperature. The mixture was filtered and the filtrate was concentrated under reduced pressure to remove the solvent. The residue was taken up with DCM (100 mL) and washed with water (100 mL). The organic layer was dried over Na₂SO₄, filtered and concentrated in vacuo to give a residue which was purified on silica gel chromatography (petroleum ether: ethyl acetate=10:1) to give (S)—N-(1-(4-bromophenyl)ethyl)-N-isobutyl(phenyl)methanesulfonamide (4.2 g, 12% yield) as colorless oil. ¹H NMR (400 MHz, CDCl₃) δ ppm 0.71 (d, 3H), 0.77 (d, 3H), 1.48 (d, 3H), 1.60-1.66 (m, 1H), 2.77-2.83 (m, 2H), 4.11-4.22 (m, 2H), 4.94-4.96 (m, 2H), 7.24-7.48 (m, 9H); 100% of purity (HPLC, 214 nm), >99% ee value (Chiral-HPLC, 214 nm).

Step 3: 4′-[(S)-1-(Isobutyl-phenylmethanesulfonyl-amino)-ethyl]-biphenyl-4-carboxylic acid amide

In a vial, N-[(1S)-1-(4-bromophenyl)ethyl]-N-isobutyl-1-phenyl-methanesulfonamide (60 mg, 0.15 mmol), 4-carbamoylphenylboronic acid (36 mg, 0.22 mmol) dichlorobis(di-tert-butyl(4-dimethylaminophenyl)phosphine)palladium(II) (10 mg, 0.015 mmol), potassium acetate (22 mg, 0.22 mmol) and sodium carbonate (23 mg, 0.22 mmol) were combined and the reaction was purged with nitrogen. Acetonitrile (1 mL) and water (0.3 mL) were then added and the reaction was stirred at 100° C. for 16 hours. The reaction was then partitioned between dichloromethane and saturated aqueous Na₂CO₃ and the organic layer was isolated using a phase-separator cartridge, concentrated and purified by preparative reverse phase HPLC to yield 34 mg of 4′-[(S)-1-(Isobutyl-phenylmethanesulfonyl-amino)-ethyl]-biphenyl-4-carboxylic acid amide. ¹H NMR (400 MHz, DMSO) δ 8.01 (s, 1H), 7.96 (d, J=8.4 Hz, 2H), 7.82-7.69 (m, 4H), 7.57 (d, J=8.3 Hz, 2H), 7.46-7.31 (m, 6H), 5.08 (q, J=7.1 Hz, 1H), 4.42 (d, J=13.4 Hz, 1H), 4.34 (d, J=13.4 Hz, 1H), 3.01-2.77 (m, 2H), 1.71-1.37 (m, 4H), 0.65 (dd, J=15.3, 6.6 Hz, 6H); LCMS (m/z) ES⁺ 451.2 [M+1]⁺.

Example 6 N-Isopropyl-N-[5-(4-methanesulfonyl-phenyl)-thiophen-2-ylmethyl]-C-phenyl-methanesulfonamide

Step 1: N-((5-(4-(Methylsulfonyl)phenyl)thiophen-2-yl)methyl)-1-phenylmethanesulfonamide

In a flask, N-[(5-bromo-2-thienyl)methyl]-1-phenyl-methanesulfonamide (Example 2, Step 2) (2.3 g, 6.6 mmol), (4-methylsulfonylphenyl)boronic acid (1.5 g, 7.3 mmol), dichlorobis(di-tert-butyl(4-dimethylaminophenyl)phosphine)palladium(II) (470 mg, 0.66 mmol), potassium acetate (980 mg, 10 mmol) and sodium carbonate (1.1 g, 10 mmol) were combined and the flask was purged with nitrogen. Acetonitrile (33 mL) and water (11 mL) were added and the reaction was stirred at 100° C. for 16 hours. Acetonitrile was then evaporated and the reaction was partitioned between EtOAc and water, washed with saturated aqueous Na₂CO₃ and brine, concentrated, dissolved in DMSO and purified by preparative reverse phase HPLC to give N-[[5-(4-methylsulfonylphenyl)-2-thienyl]methyl]-1-phenyl-methanesulfonamide (250 mg). LCMS (m/z) ES⁺ 422 [M+1]⁺.

Step 2: N-Isopropyl-N-[5-(4-methanesulfonyl-phenyl)-thiophen-2-ylmethyl]-C-phenyl-methanesulfonamide

To a solution of N-[[5-(4-methylsulfonylphenyl)-2-thienyl]methyl]-1-phenyl-methanesulfonamide (54 mg, 0.13 mmol) in N,N-dimethylacetamide (1 mL) was added sodium hydride (60% in mineral oil) (8 mg, 0.19 mmol) and the reaction was stirred at ambient temperature for 15 minutes. 2-Iodopropane (54 mg, 0.32 mmol) was then added and the reaction was stirred at ambient temperature for 16 hours. Water was added and the reaction was partitioned between EtOAc and water. The EtOAc layer was concentrated and purified by preparative reverse phase HPLC to yield 13 mg of N-Isopropyl-N-[5-(4-methanesulfonyl-phenyl)-thiophen-2-ylmethyl]-C-phenyl-methanesulfonamide. ¹H NMR (400 MHz, DMSO) δ 7.96-7.89 (m, 2H), 7.89-7.83 (m, 2H), 7.55 (d, J=3.8 Hz, 1H), 7.46-7.32 (m, 5H), 7.13 (d, J=3.8 Hz, 1H), 4.45 (s, 2H), 4.43 (s, 2H), 3.96-3.82 (m, 1H), 3.22 (s, 3H), 1.09 (d, J=6.8 Hz, 6H); LCMS (m/z) ES⁺ 251.0 [C₁₂H₁₁O₂S_(2]) ⁺.

Example 7 N-Isobutyl-N-[5-(3-methanesulfonyl-phenyl)-thiophen-2-ylmethyl]-benzenesulfonamide

Step 1: N-((5-Bromothiophen-2-yl)methyl)-2-methylpropan-1-amine

A mixture of 5-bromothiophene-2-carbaldehyde (20.0 g, 105 mmol) and 2-methylpropan-1-amine (8.03 g, 110 mmol) in methanol (200 mL) was stirred at ambient temperature for 4 h. Then NaBH₄ (6.37 g, 168 mmol) was added and the mixture was stirred at ambient temperature for an additional 2 h. Solvent was concentrated under reduce pressure. Water and EtOAc were added to dissolve the residue. Saturated aqueous NaHCO₃ was added until pH=8˜9. The aqueous layer was separated, then extracted with EtOAc. The organic layer was washed with water, brine and dried over Na₂SO₄, filtered and concentrated under reduce pressure to give the crude product, which was purified on silica gel column chromatography (petroleum ether:ethyl acetate=3:1) to give N-((5-bromothiophen-2-yl)methyl)-2-methylpropan-1-amine (22.5 g, 86% yield) as a colorless oil; LC/MS: m/z=248 and 250 [M+1]⁺.

Step 2: 2-Methyl-N-((5-(3-(methylsulfonyl)phenyl)thiophen-2-yl)methyl)propan-1-amine hydrochloride

A mixed solution of N-((5-bromothiophen-2-yl)methyl)-2-methylpropan-1-amine (22.5 g, 90.4 mmol), Pd(OAc)₂ (2.0 g, 9.0 mmol), P(o-tolyl)₃ (5.5 g, 18.0 mmol) and Na₂CO₃ (19.0 g, 180.8 mmol) was heated at reflux in a mixed solvent (250 mL, DME:H₂O=2:1) under nitrogen atmosphere for 4 h. The reaction mixture was then allowed to cool to ambient temperature, then diluted with EtOAc and washed with saturated aqueous NaHCO₃. The organic layer was dried over Na₂SO₄, filtered and concentrated under reduced pressure to give 2-methyl-N-((5-(3-(methylsulfonyl)phenyl)thiophen-2-yl)methyl)propan-1-amine, which was purified on silica gel column chromatography (petroleum ether:ethyl acetate=1:1). The organic solvent was concentrated under reduced pressure. ˜2 M methanolic HCl was added and the solvent was removed under reduced pressure. The crude product was washed with EtOAc to give 2-methyl-N-((5-(3-(methylsulfonyl)phenyl)thiophen-2-yl)methyl)propan-1-amine hydrochloride in its hydrochloride form (9.0 g, 32% yield) as a white solid. LC/MS: m/z=324 [M+1]⁺.

Step 3: N-Isobutyl-N-[5-(3-methanesulfonyl-phenyl)-thiophen-2-ylmethyl]-benzenesulfonamide

To a suspension of 2-methyl-N-((5-(3-(methylsulfonyl)phenyl)thiophen-2-yl)methyl)propan-1-amine hydrochloride (100 mg, 0.28 mmol) in dichloromethane (2 mL) was added N,N-diisopropylethylamine (0.10 mL, 0.58 mmol) and the mixture was stirred until complete dissolution of the material. Benzenesulfonyl chloride (0.039 mL, 0.31 mmol) was then added and the reaction was stirred at ambient temperature for 16 hours. The reaction was then concentrated and purified by preparative reverse phase HPLC to yield 57 mg of N-Isobutyl-N-[5-(3-methanesulfonyl-phenyl)-thiophen-2-ylmethyl]-benzenesulfonamide. ¹H NMR (400 MHz, DMSO) δ 8.04-7.99 (m, 1H), 7.94-7.90 (m, 1H), 7.89-7.81 (m, 3H), 7.73-7.58 (m, 4H), 7.50 (d, J=3.6 Hz, 1H), 7.05 (d, J=3.7 Hz, 1H), 4.56 (s, 2H), 3.28 (s, 3H), 2.93 (d, J=7.5 Hz, 2H), 1.88-1.72 (m, 1H), 0.77 (d, J=6.6 Hz, 6H); LCMS (m/z) ES⁺ 251.1 [C₁₂H₁₁O₂S₂]⁺.

Example 8 N-Isobutyl-N-[2-(4-methanesulfonylamino-phenyl)-thiazol-5-ylmethyl]-C-phenyl-methanesulfonamide

Step 1: N-((2-Bromothiazol-5-yl)methyl)-2-methylpropan-1-amine

To a mixture of 2-bromothiazole-5-carbaldehyde (1 g; 5.20 mmol) and sodium triacetoxyborohydride (3.5 g, 15.6 mmol) in dichloroethane (25 mL) was added 2-methylpropan-1-amine (0.93 mL, 9.37 mmol) and acetic acid (312 mg, 16.6 mmol), and the reaction was stirred at ambient temperature for 2 hours. The reaction was then treated with 1 N aqueous NaOH, extracted with EtOAc (×3), dried with MgSO₄ and concentrated to give N-[(2-bromothiazol-5-yl)methyl]-2-methyl-propan-1-amine (1.04 g, 80% yield) The product was used without further purification. LCMS (m/z) ES⁺ 249 [M+1]⁺.

Step 2: N-((2-Bromothiazol-5-yl)methyl)-N-isobutyl-1-phenylmethanesulfonamide

To a solution of N-[(2-bromothiazol-5-yl)methyl]-2-methyl-propan-1-amine (1.04 g; 4.17 mmol) and N,N-diisopropylethylamine (1.1 mL, 6.26 mmol) in dichloromethane (14 mL) was added phenylmethanesulfonyl chloride (1.2 g, 6.26 mmol) and the reaction was stirred at ambient temperature for 1 hour. The reaction was concentrated on silica gel and purified by silica gel column chromatography (0-50% EtOAc in heptane) to give N-[(2-bromothiazol-5-yl)methyl]-N-isobutyl-1-phenyl-methanesulfonamide (1.0 g, 59% yield). LCMS (m/z) ES⁺ 403 [M+1]⁺.

Step 3: N-Isobutyl-N-[2-(4-methanesulfonylamino-phenyl)-thiazol-5-ylmethyl]-C-phenyl-methanesulfonamide

In a vial, N-[(2-bromothiazol-5-yl)methyl]-N-isobutyl-1-phenyl-methanesulfonamide (61 mg, 0.15 mmol), [4-(methanesulfonamido)phenyl]boronic acid (49 mg, 0.23 mmol), dichlorobis(di-tert-butyl(4-dimethylaminophenyl)phosphine)palladium(II) (11 mg, 0.015 mmol), potassium acetate (22 mg, 0.23 mmol) and sodium carbonate (24 mg, 0.23 mmol) were combined and the vial was purged with nitrogen. Acetonitrile (1 mL) and water (0.3 mL) were then added and the reaction was stirred at 110° C. for 16 hours. The reaction was then partitioned between dichloromethane and saturated aqueous Na₂CO₃ and filtered through a phase separator cartridge. The organic layer was then concentrated and purified by preparative reverse phase HPLC to yield 31 mg of N-Isobutyl-N-[2-(4-methanesulfonylamino-phenyl)-thiazol-5-ylmethyl]-C-phenyl-methanesulfonamide. ¹H NMR (400 MHz, DMSO) δ 10.10 (s, 1H), 7.90-7.82 (m, 2H), 7.77 (s, 1H), 7.48-7.34 (m, 5H), 7.32-7.21 (m, 2H), 4.56-4.45 (m, 4H), 3.04 (s, 3H), 2.88 (d, J=7.5 Hz, 2H), 1.80-1.63 (m, 1H), 0.72 (d, J=6.6 Hz, 6H); LCMS (m/z) ES⁺ 494.1 [M+1]⁺.

The above compounds, together with additional compounds made using the above procedures, are shown in Table 1 below together with IC₅₀ values (micromolar) for RORc affinity.

TABLE 2 Structure IC₅₀  1 N-Isobutyl-N-(3′-methanesulfonyl- biphenyl-4-ylmethyl)-C-phenyl- methanesulfonamide

0.365  2 N-(2-Chloro-4-fluoro-benzyl)-N- (3′-methanesulfonyl-biphenyl-4- ylmethyl)-C-phenyl- methanesulfonamide

2.8  3 N-Isobutyl-C-phenyl-N-[4-(1,3,5- trimethyl-1H-pyrazol-4-yl)- benzyl]-methanesulfonamide

1.7  4 4′-[(Isobutyl- phenylmethanesulfonyl-amino)- methyl]-biphenyl-4-carboxylic acid amide

0.031  5 4′-[(Isobutyl- phenylmethanesulfonyl-amino)- methyl]-biphenyl-4-carboxylic acid dimethylamide

0.963  6 2-{4′-[(Isobutyl- phenylmethanesulfonyl-amino)- methyl]-biphenyl-3-yl}-acetamide

0.105  7 2-{4′-[(Isobutyl- phenylmethanesulfonyl-amino)- methyl]-biphenyl-4-yl}-N-methyl- acetamide

1.8  8 N-{4′-[(Isobutyl- phenylmethanesulfonyl-amino)- methyl]-biphenyl-4-ylmethyl}- acetamide

1.  9 4′-[(Isobutyl- phenylmethanesulfonyl-amino)- methyl]-biphenyl-4-sulfonic acid methylamide

0.065 10 N-[4-(3,5-Dimethyl-1H-pyrazol-4- yl)-benzyl]-N-isobutyl-C-phenyl- methanesulfonamide

2.8 11 4′-[(Isobutyl- phenylmethanesulfonyl-amino)- methyl]-biphenyl-4-sulfonic acid amide

0.081 12 N-Isobutyl-N-(4′-methanesulfonyl- biphenyl-4-ylmethyl)-C-phenyl- methanesulfonamide

0.030 13 N-Isobutyl-N-(4′- methanesulfonylamino-biphenyl- 4-ylmethyl)-C-phenyl- methanesulfonamide

0.048 14 4′-[(R)-1-(Isobutyl- phenylmethanesulfonyl-amino)- ethyl]-biphenyl-4-carboxylic acid amide

0.128 15 N-Isobutyl-N-[(R)-1-(4′- methanesulfonylamino-biphenyl- 4-yl)-ethyl]-C-phenyl- methanesulfonamide

0.696 16 N-Isobutyl-N-[(R)-1-(3′- methanesulfonyl-biphenyl-4-yl)- ethyl]-C-phenyl- methanesulfonamide

2.3 17 4′-[(S)-1-(Isobutyl- phenylmethanesulfonyl-amino)- ethyl-biphenyl-4-carboxylic acid amide

0.154 18 N-Isobutyl-N-[(S)-1-(4′- methanesulfonyl-biphenyl-4-yl)- ethyl]-C-phenyl- methanesulfonamide

0.168 19 N-Isobutyl-N-[(S)-1-(3′- methanesulfonyl-biphenyl-4-yl)- ethyl]-C-phenyl- methanesulfonamide

0.691 20 N-Isobutyl-N-[(S)-1-(4′- methanesulfonylamino-biphenyl- 4-yl)-ethyl]-C-phenyl- methanesulfonamide

0.251 21 N-Isobutyl-N-[(R)-1-(4′- methanesulfonyl-biphenyl-4-yl)- ethyl]-C-phenyl- methanesulfonamide

2.9 22 N-(3-Fluoro-4′-methanesulfonyl- biphenyl-4-ylmethyl)-N-isobutyl- C-phenyl-methanesulfonamide

0.019 23 N-(2-Fluoro-4-pyridin-4-yl- benzyl)-C-phenyl-N-(2,2,2- trifluoro-ethyl)- methanesulfonamide

0.282 24 N-Isobutyl-N-(4′-methanesulfonyl- 2-methyl-biphenyl-4-ylmethyl)-C- phenyl-methanesulfonamide

0.011 25 N-Isobutyl-N-(4′-methanesulfonyl- 3-methyl-biphenyl-4-ylmethyl)-C- phenyl-methanesulfonamide

0.057 26 3-Chloro-N-isobutyl-N-[5-(3- methanesulfonyl-phenyl)- thiophen-2-ylmethyl]- benzenesulfonamide

0.188 27 2-Cyano-N-isobutyl-N-[5-(3- methanesulfonyl-phenyl)- thiophen-2-ylmethyl]- benzenesulfonamide

3.7 28 N-Isobutyl-N-[5-(3- methanesulfonyl-phenyl)- thiophen-2-ylmethyl]- benzenesulfonamide

0.476 29 C-(2-Fluoro-phenyl)-N-isobutyl-N- [5-(3-methanesulfonyl-phenyl)- thiophen-2-ylmethyl]- methanesulfonamide

1.5 30 C-(4-Fluoro-phenyl)-N-isobutyl-N- [5-(3-methanesulfonyl-phenyl)- thiophen-2-ylmethyl]- methanesulfonamide

1.4 31 C-(3-Fluoro-phenyl)-N-isobutyl-N- [5-(3-methanesulfonyl-phenyl)- thiophen-2-ylmethyl]- methanesulfonamide

1.3 32 3,5-Dimethyl-1H-pyrazole-4- sulfonic acid isobutyl-[5-(3- methanesulfonyl-phenyl)- thiophen-2-ylmethyl]-amide

2.5 33 3-Cyano-N-isobutyl-N-[5-(3- methanesulfonyl-phenyl)- thiophen-2-ylmethyl]- benzenesulfonamide

2.4 34 N-Isobutyl-N-[5-(2- methanesulfonylamino-phenyl)- thiophen-2-ylmethyl]-C-phenyl- methanesulfonamide

1.1 35 N-[5-(4-Aminomethyl-phenyl)- thiophen-2-ylmethyl]-N-isobutyl- C-phenyl-methanesulfonamide

5.4 36 N-[5-(1-Ethyl-1H-pyrazol-4-yl)- thiophen-2-ylmethyl]-N-isobutyl- C-phenyl-methanesulfonamide

0.598 37 N-Isobutyl-C-phenyl-N-(5-pyridin- 3-yl-thiophen-2-ylmethyl)- methanesulfonamide

1.7 38 N-Isobutyl-C-phenyl-N-(5-pyridin- 4-yl-thiophen-2-ylmethyl)- methanesulfonamide

0.614 39 N-[5-(3,5-Dimethyl-isoxazol-4-yl)- thiophen-2-ylmethyl]-N-isobutyl- C-phenyl-methanesulfonamide

2. 40 4-{5-[(Isobutyl- phenylmethanesulfonyl-amino)- methyl]-thiophen-2-yl}-benzamide

0.133 41 3-{5-[(Isobutyl- phenylmethanesulfonyl-amino)- methyl]-thiophen-2-yl}-benzamide

1.4 42 4-{5-[(Isobutyl- phenylmethanesulfonyl-amino)- methyl]-thiophen-2-yl}-N,N- dimethyl-benzamide

0.608 43 3-{5-[(Isobutyl- phenylmethanesulfonyl-amino)- methyl]-thiophen-2-yl}-N,N- dimethyl-benzamide

2.4 44 N-Isobutyl-N-[5-(5- methanesulfonyl-pyridin-3-yl)- thiophen-2-ylmethyl]-C-phenyl- methanesulfonamide

2.5 45 N-Isobutyl-N-[5-(1-methyl-1H- pyrazol-4-yl)-thiophen-2- ylmethyl]-C-phenyl- methanesulfonamide

0.612 46 N-[5-(2-Amino-pyridin-4-yl)- thiophen-2-ylmethyl]-N-isobutyl- C-phenyl-methanesulfonamide

1.2 47 N-[5-(6-Amino-pyridin-3-yl)- thiophen-2-ylmethyl]-N-isobutyl- C-phenyl-methanesulfonamide

1.5 48 N-[(6-Hydroxy-pyridin-3-yl)- thiophen-2-ylmethyl]-N-isobutyl- C-phenyl-methanesulfonamide

3.6 49 N-[5-(3,5-Dimethyl-1H-pyrazol-4- yl)-thiophen-2-ylmethyl]-N- isobutyl-C-phenyl- methanesulfonamide

0.377 50 N-[(5-Cyano-pyridin-3-yl)- thiophen-2-ylmethyl]-N-isobutyl- C-phenyl-methanesulfonamide

3.1 51 5-{5-[(Isobutyl- phenylmethanesulfonyl-amino)- methyl]-thiophen-2-yl}-pyridine- 2-carboxylic acid methylamide

4.4 52 N-(5-{5-[(Isobutyl- phenylmethanesulfonyl-amino)- methyl]-thiophen-2-yl}-pyridin-2- yl)-acetamide

3. 53 N-Isobutyl-N-[5-(3- methanesulfonylamino-phenyl)- thiophen-2-ylmethyl]-C-phenyl- methanesulfonamide

0.924 54 N-Isobutyl-N-[5-(4- methanesulfonylamino-phenyl)- thiophen-2-ylmethyl]-C-phenyl- methanesulfonamide

0.059 55 N-Isobutyl-N-[5-(4- methanesulfonyl-phenyl)- thiophen-2-ylmethyl]-C-phenyl- methanesulfonamide

0.101 56 N-Isopropyl-N-[5-(4- methanesulfonyl-phenyl)- thiophen-2-ylmethyl]-C-phenyl- methanesulfonamide

0.195 57 N-[5-(4-Methanesulfonyl-phenyl)- thiophen-2-ylmethyl]-N-(2- methoxy-ethyl)-C-phenyl- methanesulfonamide

5.1 58 N-Ethyl-N-[5-(4-methanesulfonyl- phenyl)-thiophen-2-ylmethyl]-C- phenyl-methanesulfonamide

3.1 59 N-Isobutyl-N-[4-(4- methanesulfonyl-phenyl)- thiophen-2-ylmethyl]-C-phenyl- methanesulfonamide

0.278 60 Cyclopentanesulfonic acid isobutyl-[5-(3-methanesulfonyl- phenyl)-thiophen-2-ylmethyl]- amide

1.8 61 1,3,5-Trimethyl-1H-pyrazole-4- sulfonic acid isobutyl-[5-(3- methanesulfonyl-phenyl)- thiophen-2-ylmethyl]-amide

3.6 62 Pyridine-3-sulfonic acid isobutyl- [5-(3-methanesulfonyl-phenyl)- thiophen-2-ylmethyl]-amide

4.2 63 N-((5-(3-fluoro-4- (hydroxymethyl)-5- (methylsulfonyl)phenyl)thiophen- 2-yl)methyl)-N-isobutyl-1- phenylmethanesulfonamide

5 64 N-((5-(3-fluoro-4- (methylsulfonyl)phenyl)thiazol-2- yl)methyl)-N-isobutyl-1- phenylmethanesulfonamide

2 65 N-isobutyl-N-((5-(4- (methylsulfonyl)phenyl)pyridin-2- yl)methyl)-1- phenylmethanesulfonamide

2 66 N-isobutyl-N-((6-(4- (methylsulfonyl)phenyl)pyridin-3- yl)methyl)-1- phenylmethanesulfonamide

0.77 67 N-isobutyl-N-((3′- (methylsulfonyl}-[1,1′-biphenyl]-3- yl)methyl)-1- phenylmethanesulfonamide

3 68 N-isobutyl-N-((5-(4- (methylsulfonyl)phenyl)thiophen- 3-yl)methyl)-1- phenylmethanesulfonamide

0.32 69 N-((2-cyano-4′-(methylsulfonyl)- [1,1′-biphenyl]-4-yl)methyl)-N- isobutyl-1- phenylmethanesulfonamide

0.074

Example 9 In Vitro RORc Ligand Binding Assay

This assay was used to determine a compound's potency in inhibiting activity of RORc by determining, Ki_(app), IC₅₀, or percent inhibition values. Consumables used in this Example are shown in Table 2 below.

TABLE 2 Consumable Supplier and product code GFB Unifilter plates Perkin Elmer 6005177 3-[(3-Cholamidopropyl) Sigma C5070 dimethylammonio]-1- propanesulfonate (CHAPS) 96-well polypropylene Nunc 267245 U-bottom assay plate HEPES buffer, 1M Sigma H3375 Magnesium chloride (MgCl₂) Sigma M8266 D,L-Dithiothreitol (DTT) Sigma D0632 Sodium chloride (NaCl) Sigma 71382 Bovine serum albumin (BSA) Sigma A7030 [lyophilized powder, ≧98% (agarose gel electrophoresis), Essentially fatty acid free, essentially globulin free] 25-hydroxycholesterol Sigma H1015 25-[26,27-³H]hydroxy- Perkin Elmer NET674250UC cholesterol American Radiolabeled Chemicals ART0766 RORc ligand binding domain Genentech (e.g., PUR 28048), expressed in E. coli Plate seals Perkin Elmer 6005185 Microscint 0 Perkin Elmer 6013611 Table 2

Filter Plate Preparation

On day of the assay, 100 uL of 0.05% CHAPS (in deionized H₂O) was added to all wells of the GFB Unifilter plate and allowed soak for 1 h. A wash buffer of 50 mM HEPES (pH 7.4), 150 mM NaCl, and 5 mM MgCl₂ was prepared to wash the filter plate. To prepare an assay buffer, BSA was added to the wash buffer to reach 0.01% and DTT was added to reach 1 mM.

Compounds

For IC₅₀ mode, 10 mM compound stocks were serially diluted in DMSO with DMSO to give 20× required final concentration in DMSO (15 uL compound+30 uL DMSO). The 20× compound stocks were diluted in DMSO with Assay Buffer 4-fold to reach 5× the final test concentration in 25% DMSO (10 uL compound+30 uL Assay Buffer). Solutions were mixed by aspiration several times with a pipette set on 50 uL volume. For the assay, 10 uL of 5× compound stock solutions in 25% DMSO were added to the assay plate in duplicate.

For two point screening, 10 mM stock compound solutions were diluted in DMSO to obtain 200 uM (20× the high test concentration) and then diluted 10-fold further to reach 20 uM (20× the low test concentration). The 20× stocks were diluted 4-fold with Assay Buffer (10 uL compound+30 uL Assay Buffer) to reach 5× the test concentrations (50 uM and 5 uM) and 10 uL were added to two assay plates for the duplicate wells. With each concentration tested on 2 plates, each set of 80 compounds used 4 assay plates (1 uM and 10 uM, with n=2).

Nonspecific Binding (NSB) Samples, Total Binding (TB) Samples and No Receptor (No R) Samples

25-hydroxycholesterol (1 uM) was used to determine the level of NSB signal is prepared in DMSO as for compounds above, then diluted in Assay Buffer to give a final concentration of 5 uM. For 25-hydroxycholesterol in 25% DMSO/75% Assay Buffer; 10 uL per well was used for NSB samples. Wells for Total Binding and No Receptor sample determination contained 10 uL of 25% DMSO/75% Assay Buffer per well.

Radioligand (25-[³H]hydroxycholesterol) Preparation

25-[³H]hydroxycholesterol was diluted in Assay Buffer to obtain 15 nM and vortexed to mix. Added 20 uL to all wells to reach 6 nM final in the assay.

Receptor Preparation

The optimal concentration for RORc receptor was found to be 0.6 ug/mL. Stock receptor solution was diluted in assay buffer to obtain 1.5 ug/mL in Assay Buffer. 20 uL was added to all wells. For No R samples, 20 uL Assay Buffer was substituted for receptor solution.

Sample Addition to Plates and Incubation

Assay plates were 96-well polypropylene V-bottom plates. 10 uL of 5× compound in 25% DMSO/75% Assay Buffer was added to Test wells. 10 uL of 25% DMSO/75% Assay Buffer was added to Total Binding or No Receptor wells. 10 uL of 5 uM 25-hydroxycholesterol in 25% DMSO/75% Assay Buffer was added to NSB wells. 20 uL of 15 nM 25-[³H]hydroxycholesterol prepared in Assay Buffer was added to all wells. 20 uL of 1.5 ug/mL RORc receptor was added to wells (or 40 uL Assay Buffer to No R wells). Following addition to the wells, the plates were incubated 3 h at 25° C.

Filtration

Using a Packard Filtermate Harvester, the filter plates were washed 4 times following transfer of the incubated samples. Plates were dry-filtered completely (2 h at 50° C. or overnight at room temperature). 50 uL Microscint 0 was added to all wells and read on Topcount protocol Inverted.

Final Concentrations

Final concentrations were as follows: 50 mM HEPES buffer (pH 7.4); 150 mM NaCl; 1 mM DTT; 5 mM MgCl₂; 0.01% BSA; 5% DMSO; 0.6 ug/mL RORc receptor; 6 nM 25-[³H]hydroxycholesterol. For NSB wells, 1 uM 25-hydroxycholesterol was also present.

While the present invention has been described with reference to the specific embodiments thereof, it should be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the true spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation, material, composition of matter, process, process step or steps, to the objective spirit and scope of the present invention. All such modifications are intended to be within the scope of the claims appended hereto. 

What is claimed is:
 1. A compound of formula I:

or pharmaceutically acceptable salts thereof, wherein: A is a group of formula: (a); (b); (c); or (d):

B is a group of formula: (e); (f); (g) or (h):

C is a group of formula: (i); (j); (k); or (m):

m is 0 or 1; n is from 0 to 3; p is from 0 to 2; q is from 0 to 3; r is from 0 to 3; s is from 0 to 2; t is 0 or 1; u is from 0 to 3; R¹ is: hydrogen; or C₁₋₆alkyl; R² is: hydrogen; or C₁₋₆alkyl; R³ is: C₁₋₆alkyl; C₃₋₆cycloalkyl; C₃₋₆cycloalkyl-C₁₋₆alkyl; heterocyclyl; heterocyclyl-C₁₋₆alkyl; phenyl-C₁₋₆alkyl; or C₁₋₆alkylsulfonyl, wherein the C₁₋₆alkyl, C₃₋₆cycloalkyl C₃₋₆cycloalkyl-C₁₋₆alkyl and phenyl-C₁₋₆alkyl each may be optionally substituted one or more time with halo; R⁴ is: hydrogen; or C₁₋₆alkyl; R⁵ is: hydrogen; or C₁₋₆alkyl; R⁶ is: cyano; —(CH₂)_(v)—NR^(a)R^(b); —(CH₂)_(v)—S(O)_(w)—R^(c); —(CH₂)_(v)—C(O)—NR^(a)R^(b); —(CH₂)_(v)—S(O)_(w)—NR^(a)R^(b); —(CH₂)_(v)—NR^(d)—C(O)—R^(c); —(CH₂)_(v)—NR^(d)—C(O)—NR^(a)R^(b); or —(CH₂)_(v)—NR^(d)—S(O)_(w)—R^(c), wherein: v is 0 or 1, w is from 0 to 2; R^(a) and R^(b) each independently is: hydrogen; or C₁₋₆alkyl; R^(c) is: C₁₋₆alkyl; C₃₋₆cycloalkyl; or C₃₋₆cycloalkyl-C₁₋₆alkyl; and R^(d) is: hydrogen; or C₁₋₆alkyl; each R⁷ is independently: C₁₋₆alkyl; halo; C₁₋₆alkoxy; cyano; halo-C₁₋₆alkyl; hydroxy-C₁₋₆alkyl; halo-C₁₋₆alkoxy; or C₁₋₆alkylsulfonyl; R⁸ is: C₁₋₆alkyl; C₃₋₆cycloalkyl; or C₃₋₆cycloalkyl-C₁₋₆alkyl; R⁹ is: hydrogen; or C₁₋₆alkyl; R¹⁰ is: hydrogen; or C₁₋₆alkyl; R¹¹ is: hydrogen; hydroxy; cyano; —(CH₂)_(n)—NR^(a)R^(b); —(CH₂)_(n)—S(O)_(v)—R^(c); —(CH₂)_(n)—C(O)—NR^(a)R^(b); —(CH₂)_(n)—S(O)_(v)—NR^(a)R^(b); —(CH₂)_(n)—NR^(d)—C(O)—R^(c); —(CH₂)_(v)—NR^(d)—C(O)—NR^(a)R^(b); or —(CH₂)_(n)—NR^(d)—S(O)_(v)—R^(c). each R¹² is independently: C₁₋₆alkyl; halo; C₁₋₆alkoxy; cyano; halo-C₁₋₆alkyl; halo-C₁₋₆alkoxy; or C₁₋₆alkylsulfonyl; each R¹³ is independently: C₁₋₆alkyl; halo; C₁₋₆alkoxy; cyano; halo-C₁₋₆alkyl; halo-C₁₋₆alkoxy; or C₁₋₆alkylsulfonyl; each R¹⁴ is independently: C₁₋₆alkyl; halo; C₁₋₆alkoxy; cyano; halo-C₁₋₆alkyl; halo-C₁₋₆alkoxy; or C₁₋₆alkylsulfonyl; R¹⁵ is: C₁₋₆alkyl; C₃₋₆cycloalkyl; or C₃₋₆cycloalkyl-C₁₋₆alkyl; R¹⁶ is: hydrogen; or C₁₋₆alkyl; R¹⁷ is: hydrogen; or C₁₋₆alkyl; each R¹⁸ is independently: C₁₋₆alkyl; halo; C₁₋₆alkoxy; cyano; halo-C₁₋₆alkyl; halo-C₁₋₆alkoxy; or C₁₋₆alkylsulfonyl; and R¹⁹ is C₁₋₆alkyl; provided that the compound is not N-isobutyl-N-[5-(3-methanesulfonyl-phenyl)-thiophen-2-ylmethyl]-C-phenyl-methanesulfonamide.
 2. The compound of claim 1, wherein C is a group of formula (i).
 3. The compound of claim 2, wherein A is a group of formula (a).
 4. The compound of claim 3, wherein B is a group of formula (e).
 5. The compound of claim 3, wherein B is a group of formula (f).
 6. The compound of claim 3, wherein m is
 0. 7. The compound of claim 3, wherein m is
 1. 8. The compound of claim 3, wherein R¹ and R² are hydrogen.
 9. The compound of claim 3, wherein R⁴ and R⁵ are hydrogen.
 10. The compound of claim 3, wherein R³ is: C₁₋₆alkyl; C₃₋₆cycloalkyl; or C₃₋₆cycloalkyl-C₁₋₆alkyl; each of which may be optionally substituted one or more times with halo.
 11. The compound of claim 3, wherein R³ is C₁₋₆alkyl.
 12. The compound of claim 3, wherein R³ is isobutyl.
 13. The compound of claim 3, wherein A is a group of formula (a1) or (a2):


14. The compound of claim 13, wherein R⁶ is: —SO₂—R^(c); —(CH₂)_(n)—C(O)—NR^(a)R^(b); —(CH₂)_(n)—SO₂—NR^(a)R^(b); —(CH₂)_(n)—NR^(d)—C(O)—R^(c); or —(CH₂)_(n)—NR^(d)—SO₂—R^(c).
 15. The compound of claim 1, wherein the compound is of formula II:


16. The compound of claim 1, wherein the compound is of formula III:


17. The compound of claim 1, wherein the compound is of formula IV:


18. A composition comprising: (a) a pharmaceutically acceptable carrier; and (b) a compound of claim
 1. 19. A method for treating arthritis, said method comprising administering to a subject in need thereof an effective amount of a compound of claim
 1. 